Gripper Lsd Bearing Question

So, I dropped one of my old diffs and my new gripper at a machine shop to have the bearings but on, but he gave my a call saying that the bearings will not fit on the Gripper, I believe he said they were too small, has anyone else had this issue? Or is there a specific size that I need to purchase? I saw on the Quaife that you swapped the bearings and assumed this would be the same. Any suggestions? I don't want to modify the differential to fit the bearings if there's another option. Ill be going in tomorrow to check out what the deal is.

Thanks in advance for any help.