Does anyone here know if I need some kind of sealant on the large gasket for the back cover or the water pump? I am also attempting to replace the bearings in the AC idler (one has almosted seiezed up!). But I am unsure exactly how I'm supposed to be doing this. (I have the belt and bearying kit from PJ Grady). Any help will be greatly appreciated. Jim Reeve MNDMC - Minnesota DeLorean Club DMC-6960