Hi Daf57, I took another good look at the grip on my 1851 and the heel of the grip is indeed slightly proud. IMO that's an easy fix, much better than needing to add wood. One side of the grip has a nice figure. I don't see any visible brass casting pits. I also noticed that the Pietta grip shape is very good, the old Pietta 1851 backstrap tail is gone.
How are the steel parts fit, finish, and timing on your 1851?
I understand that Dixie is very good taking back guns with issues.
Regards,
Richard