My parents boiler mag filter was leaking last week and asked me to have a look. I took the filter off and gave it a clean - put some plumber tape on and tightened up. No more leaks. Now a week on my parents saying water was dripping from the boiler, had a look at it seems a leak on the pipe further down the filter before it enters the boiler. Obviously I can use plumber tape and retighten - but given the fact the leak has come so soon after the other, does this point to an bigger issue? It’s an open vented system and all seems to be working fine? Thanks in advance.