Its been a little while since I first posted on here, but I am now rebuilding the power head. Its a 96 model 200 EFI merc, replaced pistons/rings, all bearings, all seals, check valves, bleed lines, and all fasteners, everything is ready to assemble.<br /> I could use a few pointers if anyone has some. I went ahead and bought the sealant kit for the crank case halves. It also has the small cork gasket that seats in the crank case half. A few concerns I have are if I need to put the sealant on both halves, then install the cork gasket, and where else it is important to use the sealer on the block and crank case. <br /> The top and bottom end caps have the thin rubber rings, but do they seal good enough by themselves.<br /> Should i put any type of gasket sealant around the top or bottom end caps, or do I run the sealant right up against them before I join the halves together. This is my first outboard rebuild, but I have rebuilt 2 strokes and I know how important it is to not have any air leaks. This is my only concern, and I could use some input.<br /> Any help would be greatly appreciated, thanks, Mike