Recently purchased a used G35 which appears to be in good shape. First trip to the range today and having problems with the gun failing to chamber rounds. It will fire a round and then fail to chamber the next round. Slingshot it and it chambers the round. Two magazines came with the gun and it occurs in both almost every round. I have ordered two new mags. Will have them by the end of the week. Could it be anything else? Mags seem to have just a bit of play.