Put a little Never-Seez on the threads and drive on. Stainless tends to friction weld itself together when bolts and nuts of the same alloy are torqued tightly, but I don't think I've ever seen carbon steel and stainless fasteners gall when they're used together.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!