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Force crank gxp bb problem
I am installing a Force crank set and a GXP bb on my tcr advanced, but I am having a bit of trouble. I read the instructions that came with the bb and crankset. Followed them to the letter. I measured the bb shell and found I have the 68 mm shell so I need to use the 2 spacers provided with the bb bearings. I installed these and the bearings, no problem. next I greased up the crankarm/spindle and slid it in, again, no problem. I then put the left crank arm on the spindle and snugged it up. A dragging sensation is felt, as if something is rubbing. So I disassemble and look at everything. There is a drag mark inside the spider where it has been rubbing on the bearing external cup. The bb cup protrudes past the bearing a few thousanths. If I tighten the crankarm bolt any more than just snug it wont turn at all. It acts like there should be a spacer between the bearing and the spider but nothing is shown on any of the instructions.
Is there a different crank arm for the different types of bb's?
Any light anyone can shine on this would be appreciated.