JPG40504 wrote:The purpose of the 'shim' suggestion was to sanity check my thinking, not a permanent fix. The later posts indicate my "success" in equalizing my cover clearance.
STEP by STEP(and hopefully clearer).
1) remove two belt cover screws, and set aside.
2) slide the belt cover off the headstock.
3) notice the shape of the top of the belt cover. It is SLIGHTLY curved out across the top and the sides form two rounded 'corners'.
4) Using some fork like object (open end wrench(padded)) apply a twisting force(torsion) to the 'low' corner of the top.
This force should be applied so as to bend the top in(down) and the side out. Forcing the top in(down) will tend to raise that side of the cover up off the waytube(when reassembled). Forcing the cover out will allow slight rotation of the cover(relative to the headstock) thus also SLIGHTLY increasing hole/tube clearance. This torsion is applied in a counter-clockwise direction when viewed from the headstock side(open side) and to the 'corner' on the right.
5) APPLY torsion(still c'clkwise , 'fork' repositioned) to the 'other corner'. Top out(up) and side in. This will help restore the tendency to self align and therefore depend less on the screws holding it in exact position.
6) Slide cover back onto headstock, replace screws and determine degree of 'success'. Repeat as required.
I know! 'step' 4,5 got muddy again. Detailed understanding of the intent IS necessary.
Consider what happens at the hole when the cover is RAISED by lowering the top corner. When put back on the headstock, the lowered edge of the top will cause the cover to go onto the headstock slightly raised from where it was before. Top edge bent in will contact the headstock and force the REST of the cover to a 'higher' position. Thus the same as a shim!
This makes more sense when the parts are 'right there'!
This will make sense when I am at the machine I am sure. I'll "tweak around" with it tonight.