Re: broken motor mount stud
check out the time-sert stripped thread repair kits on amazon. its kinda spendy but it comes with 5 inserts so you could strip out a few more and be covered. ive found it is truly the best way to fix the threads on these motors. and since 6mm is every stud and bolt except for the head( unless you have 6mm head studs too) then this is a valuable tool.