Chrysler power steering pump seal kit gasket?

Yes it is a TRW pump, and just like yours Steve mine only has the one bolt hole in the tank. I did look at your "TRW ps pump question" and it was suggested not to use the gasket by other members so I will not. Also I have read that some other members say to use a thin film of gasket sealer on the big O ring just in case of imperfections in the reservoir tank, has anyone else done this?
Thanks Bob