For the folks who may be researching this issue later, I've had some success removing the epoxy on the stock. It's not perfect, but it is better than it was before.
Initially, I used a fine, small, triangular (cross section) file. I did not attempt to take the epoxy down to the wood, since that would scar the finish and maybe the wood underneath. Instead, I just hit it lightly across the thickest part, mostly with the flat, but sometimes the edge. Eventually, that weakened the epoxy, which is very brittle. When it got thinner, somethimes I'd press lightly with the file - the wood behind the epoxy is more resilient that the epoxy, and the epoxy would break. Then it was thumbnail time. some of the pieces came off in big enough chucks to jab me under the thumbnail, so it did work.
There are small pieces left that I'll be working for some time.
Jaywalker