mk1 not getting up to temp.

[natnif]

I got a few minutes at it today and sealed up the join nicely. It improved a bit, but the next join down the line is just as bad. Unfortunately, that can't be reached anywhere near as easily and it will mean dash off to get proper access. I'm fairly certain that it will solve the problem though, so a time consuming but very cheap fix. Now I just need to find the time to do the work!