For what it's worth, I was once sent a carrier that had instructions to drill the holes out to 1/2" if that was the size bolt that your ring gear required.
Some gear sets these days are dual pattern for the 7/16 and 1/2 bolt sizes.
So in my opinion it's not a big deal to drill the carrier for the larger size bolt. Just be sure there are ZERO burs or metal poking up on the side that the gear seats on. I dont mean a little or a tiny bit is ok I mean ZERO edges higher than the seating surface.
Yeah - my ARB locker says to do this in the instructions, if necessary - I expected that I may end up having to do it when I go to tackle the rear.
HOWEVER, I may have to go that route with the front now, anyway. The instructions I got from Yukon say to torque these bolts to 135 ft-lb, which seems like a lot to me since it used to be, what, 55 ft-lb on an old-school 44? But, I figure JKs are different....
The first bolt head slipped and chewed up quite a bit, even with a 6-point socket. Okay, figure that's probably my fault... I did get it torqued down, though. Second bolt didn't slip a bit, but completely sheared the threads off on half the bolt. Was able to work the bolt back out with a screwdriver, rubber mallet, and a lot of patience, but by that point, I figured I was going to call it a night. Haven't had a chance yet to tear it apart and see if it trashed the threads in the ring gear, but I'm betting they're not going to look very nice.
Looking around - in several places, I keep seeing that torque spec is 100 ft-lb on the 44/216. I think someone misread and put the N-m value (136).
Might just be a good idea to drill out the carrier anyway, and use the 1/2 inchers for some extra strength, I suppose.