Hi, I bought a new XT22 and am having trouble with the feed. Sometimes when loading a bullet, it will shave the next bullet below it in the magazine or jam completely on it. If I pull back on the magazine it does not do this, appears the magazine is too high/too much angle. Looks like if I would put a small shim under the screw in the magazine holder, it would probably fix it. Or would it be better to send it in under warranty or am I missing anything else? Thanks!