RE: Two bolts on main shaft.... special steel or not?
Hey TANDEM 4,
YEP as bad 400 said they are 2 mm x 12 and are steel. Sometimes the nut with a nylon insert in the tread to stop it from backing off in flight "YIKES" are not easy to find even here. So a standard 2mm nutwith LOCTITE will work.
JPEE