diff --git a/basicswap/basicswap.py b/basicswap/basicswap.py
index 3cf02a8..ea2e5af 100644
--- a/basicswap/basicswap.py
+++ b/basicswap/basicswap.py
@@ -1360,7 +1360,14 @@ class BasicSwap(BaseApp):
         return addr
 
     def getCachedMainWalletAddress(self, ci):
-        return self.getStringKV('main_wallet_addr_' + ci.coin_name().lower())
+        db_key = 'main_wallet_addr_' + ci.coin_name().lower()
+        cached_addr = self.getStringKV(db_key)
+        if cached_addr is not None:
+            return cached_addr
+        self.log.warning(f'Setting {db_key}')
+        main_address = ci.getMainWalletAddress()
+        self.setStringKV(db_key, main_address)
+        return main_address
 
     def checkWalletSeed(self, c):
         ci = self.ci(c)
diff --git a/basicswap/http_server.py b/basicswap/http_server.py
index 96cfe69..eca218c 100644
--- a/basicswap/http_server.py
+++ b/basicswap/http_server.py
@@ -76,14 +76,14 @@ def getCoinName(c):
     return chainparams[c]['name'].capitalize()
 
 
-def listAvailableCoins(swap_client):
+def listAvailableCoins(swap_client, with_variants=True):
     coins = []
     for k, v in swap_client.coin_clients.items():
         if k not in chainparams:
             continue
         if v['connection_type'] == 'rpc':
             coins.append((int(k), getCoinName(k)))
-            if k == Coins.PART:
+            if with_variants and k == Coins.PART:
                 coins.append((int(Coins.PART_ANON), getCoinName(Coins.PART_ANON)))
                 coins.append((int(Coins.PART_BLIND), getCoinName(Coins.PART_BLIND)))
     return coins
@@ -232,9 +232,33 @@ class HttpHandler(BaseHTTPRequestHandler):
         return bytes(template.render(
             title=self.server.title,
             h2=self.server.title,
-            coins=listAvailableCoins(swap_client),
+            coins=listAvailableCoins(swap_client, with_variants=False),
             coin_type=coin_type,
             result=result,
+            messages=messages,
+            form_id=os.urandom(8).hex(),
+        ), 'UTF-8')
+
+    def page_debug(self, url_split, post_string):
+        swap_client = self.server.swap_client
+
+        result = None
+        messages = []
+        form_data = self.checkForm(post_string, 'wallets', messages)
+        if form_data:
+            if have_data_entry(form_data, 'reinit_xmr'):
+                try:
+                    swap_client.initialiseWallet(Coins.XMR)
+                    messages.append('Done.')
+                except Exception as a:
+                    messages.append('Failed.')
+
+        template = env.get_template('debug.html')
+        return bytes(template.render(
+            title=self.server.title,
+            h2=self.server.title,
+            messages=messages,
+            result=result,
             form_id=os.urandom(8).hex(),
         ), 'UTF-8')
 
@@ -1228,6 +1252,8 @@ class HttpHandler(BaseHTTPRequestHandler):
                     return self.page_settings(url_split, post_string)
                 if url_split[1] == 'rpc':
                     return self.page_rpc(url_split, post_string)
+                if url_split[1] == 'debug':
+                    return self.page_debug(url_split, post_string)
                 if url_split[1] == 'explorers':
                     return self.page_explorers(url_split, post_string)
                 if url_split[1] == 'offer':
diff --git a/basicswap/templates/debug.html b/basicswap/templates/debug.html
new file mode 100644
index 0000000..0ab8ca9
--- /dev/null
+++ b/basicswap/templates/debug.html
@@ -0,0 +1,22 @@
+{% include 'header.html' %}
+
+<h3>Debug</h3>
+{% for m in messages %}
+<p>{{ m }}</p>
+{% endfor %}
+
+<form method="post">
+<p>
+<input name="reinit_xmr" type="submit" value="Reinitialise XMR wallet" >
+<input type="hidden" name="formid" value="{{ form_id }}">
+</p>
+</form>
+
+{% if result %}
+<textarea class="monospace" rows="40" cols="160">
+{{ result }}
+</textarea>
+{% endif %}
+
+<p><a href="/">home</a></p>
+</body></html>
diff --git a/basicswap/templates/offer_new_1.html b/basicswap/templates/offer_new_1.html
index 11be0d1..2f3e131 100644
--- a/basicswap/templates/offer_new_1.html
+++ b/basicswap/templates/offer_new_1.html
@@ -36,7 +36,7 @@
 {% endfor %}
 </select>
 </td><td>Amount To</td><td><input type="text" id="amt_to" name="amt_to" value="{{ data.amt_to }}" onchange="set_rate('amt_to');"></td><td>The amount you will receive.</td></tr>
-</td><td>Rate</td><td><input type="text" id="rate" name="rate" value="{{ data.rate }}" onchange="set_rate('rate');"></td><td>Lock Rate: <input type="checkbox" id="rate_lock" name="rate_lock" value="rl"></td></tr>
+</td><td>Rate</td><td><input type="text" id="rate" name="rate" value="{{ data.rate }}" onchange="set_rate('rate');"></td><td>Lock Rate: <input type="checkbox" id="rate_lock" name="rate_lock" value="rl" checked="true"></td></tr>
 
 <tr><td>Amount Variable</td><td><input type="checkbox" id="amt_var" name="amt_var" value="av" {% if data.amt_var==true %} checked="true"{% endif %}></td></tr>
 <tr><td>Rate Variable</td><td><input type="checkbox" id="rate_var" name="rate_var" value="rv" {% if data.rate_var==true %} checked="true"{% endif %}></td></tr>