Red LocTite is your friend! You could also cross-drill the bolt heads and use aircraft type safety wire to secure the bolts. I'd suggest using the LocTite, along with the correct torque.

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!