Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
Way back when, we found the most common reason for a replaced seal leaking was damage to the inside of the hole where the old seal was prised out. careful dressing and a small amount of rtv cured about 85% of them
FFS. Has he been using polyfilla as a tank sealant?
A tank that I have is coated inside very badly with white sealant. I thought it was Kreem. Paintwork on the outside is very good. How did you break it up? I thought about rattling it with a load of nuts/bolt inside.