Finally got a chance to replace the bearings for bushings. There was virtually no damage to the gearbox or gears since it was caught relatively early. If you do nothing else to your gearbox, replace the bearings for bushings, I cannot stress that enough.
8mm Lonex bushings were installed, and then I spent the better part of 4 hours finishing off what I daresay is the best shim job I've done to date!
With everything re-installed I re-chronoed and am pretty happy with the results, minimal ROF loss and still shooting right where I want it with zero hop applied!