I've read several threads about using Nu Finish + something to cut it with (low odor paint thinner?). I came across a bottle of "denatured alcohol" and was wondering if that is fine to use? Would the denatured be fine to use for cleaning the primer slide bar, etc (been using Isopropyl alcohol)? Getting ready to tumble some real dirty 9mm brass. These roller locked weapons & flutes keep things dirty + I'm shooting some in a MP5SD (clone) that really leaves the brass black. I'm still using the bottle of polish that came with my tumbler kit. Recipe advice please.