Got a Pedersoli Queen Anne coming my way....

[wiscoaster]

worn out welding glove IS your friend.

I use worn-out Minnetonka mocassins leather.

 

[wiscoaster]

I don't think the slit will allow the flint to move back any farther than the 2-hole method, since the flint can only go back as far as the screw.
...

Yes, good point. The slit method is easier to position the flint as far back as it can go, but does nothing to help retain it.

 

[sussexmuzllodr]

browned up the barrel on the QA kit that arrived...