I just bought a set of PXG irons with Mitsubishi MMT shafts. Unfortunately I mis-read the listing and found them to be -1/2”  and I use a +1/2”. What diameter shaft extensions do I buy? The shafts are supposed to be .592 OD.
also what is best epoxy to use?

My other option would be return them to seller and pay freight and a 10-15% restock fee.