That's such an awesome gun! Try out a Pearce +1 mag extension, for me that little extra pinky rest made a world of difference on the 29. I liked the gun from the start (why I bought it) but really started to get serious about it once I shot it with the Pearce extension.
I did the same with my 21c - my hand just doesn’t fit the standard grip right. I want to shoot a 500 in GSSF Indoor with that gun, I’ll switch it back once I have. Although at my current performance, that’s gonna be awhile.