my friend just got a new XD-40 service model and we both loaded the 10-round mags up , it was one that still had the 10-rounders its new in box . We loaeded them up and when he tried to test the mags to see how easy they would drop out of the gun, the damn mag release button was harder than hell! Like the full mag was causing it to do this , but when the mag is out , the button push's in and out like normal . What could casue this? It was like the full mag was causing the mag release button to be in a bind.Any help is greatly appreciated!