I am changing my spindle from a Bosch Colt to a Dewalt. I'm assuming some shimming is required. Can anyone point me in the right direction ? Does anyone make a set of shims for the OB spindle mounts, or should I just do a little jury rigging. I measured the mounts and the spindle and came up with about a 2mm difference which would mean a 1mm shim is needed. That sound 'bout right?