This is actually a great mod. Really opens up air flow after a ported snout and 105mm+ throttle body. Not a bad price considering it retails for $1,000 + shipping + labor of honing..... $1,125 I would say.
Yes, the holes were too small for the bearings, this caused bearing failures and sc damage when they locked up. You could get them in but it was too tight on the bearing.
Factory bearing hole was a 1.573, FAS had 1.5715 to 1.572
A caliper hone and some time was all it needed.