I have a Gen4 G19, S/N RWYxxx tested SEP-2011 that stovepipes a few times every 100 rounds. It has RSA #043 and ejector 336. Could they be the source of the problem? I shoot 124gr ammo and have never experienced ejection problems in any of the other five 9mm Glocks I have owned over the years using this ammo and gripping the gun the same way. I am not limp wristing.