Personally I have never made any mistakes but if I did I would fix it like Mr. Stephenson said. I did break a #8 jewelers saw blade once but I think it was defective to begin with.
See, even Masters are humble. I love it!
Sespe,
Fix what you can, and move on with it. You have great advice here, and if all else fails, Jim Kibler has just offered to send you a new patch box lid. You can’t lose here. Your rifle is going to knock the socks off people who don’t know about these guns, and for people who do know, they will understand the effort of building a rifle as a new guy and give you a pass on the error.
If I were you and wanted to learn, I’d try to fix the error first. Personal pride and satisfaction will reward you greatly for it. If that fails, call Jim and do it right when he sends you the new lid.
This small error is not actually the point here at all. And that is what Jim’s kits are all about. It’s giving the new guy to muzzleloading, or the old guy who doesn’t want to build, a really quality rifle that you just can’t get from the production guns.
You will not find a production gun with better architecture, ,lock, and furniture than you can get from a Kibler kit. Period, full stop.
And if you get satisfaction from building this rifle, then maybe you will build another from Jim, or another from a blank or a pre-carve. And that is a win for you and for this community.
All the best to you and your build,
Norm.