RE: Two bolts on main shaft.... special steel or not?
Jon6565,
A thought on this issue. My feeling is because we use Loctite on our F-Shafts screws they can become fouled if not cleaned up properly and most guys don't know how to remove the old Loctite so I feel thats why they are included. The other issue is, IF a F-Shaft screw backed out or broke, or got weakened by a blade strike someone is going to the hospital when those loose blades penetrate someones body, it possible. If a main shaft screw fails the entire head could come off but it would be contained. So thats my thinking, but still I am withya all that the 2 mm screws and nuts should come with new main shafts. If youve bent the mainshaft, youve stressed the two screws for the top and bottom of the shaft.
That just an old guys take on this issue.
JPEE