Most replacement clutch covers are balanced during the manufacturing/rebuilding procedure so don't worry about how it's installed. I'll bet there have been at least a few clutch changes on that rig since 1941!
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!