thankyou both for your replies. a full fluid change would be on the cards anyway. clf was the cork gasket from ebay or from the jatco people (sussex autobox repair ) ? i would like to go down the gasket road if possible, but not unless it was made for the job and ends up (too thick) . i suppose if overtightened whilst using a gasket could warp the pan if too thick. the bolts are a low torque fit anyway but it would be easy to do damage i think. im wondering if the sealant method may turn out to be the better bet , as russ sugested. i have rensol and also blue holymer but im not sure if either of these would stand up tp ATF erosion.