Since you already have the 30274 ejector, the most you could do is try swapping extractors. The latest non-dipped extractors seem to work well for most people and that's what Glock in Smyrna is using now. Hopefully they'll save you the trouble and install one when they get your gun.
G23 G27 .40 S&W Club Member# 4520
Stay safe, stay Second Amendment!