I had the exact same problem with my StormLake for my G29. I was TOO TIGHT to feed rounds. So I polished it. It still has superior case support but the chamber has been polished a bit.
After about 50 rounds, she ran 100% with everything including lead wide nose and my reloads. So far 900 rounds without a problem.
For my second G29 I did buy a lonewolf; it runs 100% as well.
It's ported; I will be cutting the end off soon..LOL
Take care, Bob