As a follow-up, I spoke personally with Doug Turnbull today regarding this problem. He could not imagine what could have caused the grooving and could offer no solutions nor reasons that they were just noticed now after all the money and time. He said they had tried and failed to hone the grooves out. The alternatives were to trash the project or finish the case colors and barrel blacking. I want it finished. After all these years this is the most expensive project I've ever done with guns and the only one to go sour. It just sucks.