Heck, I might even try squirting the guts full of toothpaste and dry firing the crap out of it with a snap cap first. I don't think they get any stoning at the factory and some times there are some rough edges left over from the milling or some scale from the heat treating. I thought of boosting the hammer, it often helps a bit on s for example. I'll have to think about it, not a bad idea. I think I was lucky and I wouldn't recommend this task unless you really have the proper tools. When I field strip the Beretta 21A, however, those dual recoil springs mock me. But I give it a little Lubriplate on the sear and keep the rest lubricated.