Most of the older guns I have seen that have had recut checkering have had the wrong angle checkering tool used. You can spot them a table away at a gun show. The original checkering did not have sharp 90 degree points. I have a friend who has lots of stock restoration experience. He sometimes makes his checkering restoration tool out of old hack saw blades that are ground even finer than the 60 degree tool that we are talking about .

http://www.bakercollectors.com/