Have NOS flywheel bolts ( qty. 8 ) and the originals are held with nuts. Question: Are these nuts secured with a lock washer or not. I purchase Grd 8 nuts ( 7/16 UNF ) and to tighten these is not easy since there is very little space behind the crank flange. Not even a box end wrench fits....can only use the open end. Also, with the aluminum plate spacer I can only get a small turn. Does one use 'Loctite' and tighten as much as possible with an open end. ( No the crank is not drilled and threaded for a 1/2" UNF bolt......just using the existing stock set-up ) Would appreciate some help here.