I had an kicka$$ day at the range with my SIG 210. I bought a new mag from sig for $90 the preformed perfectly. But my mag from pro mag could not feed the second round. The ammo would dive down into the feeding ramp. I tried using five different ammo but with the same results. So NOW what do I do. Shall i return the mag to cdnn and get a store credit $50 or shall I polish the inside of the mag walls and change the follower and spring and hope for the best ? any suggestions ! help! thanks.