Cylinder head cleanup, cosmetic

I've got a set of used aluminum ProMaxx SBM heads that I'd like to clean up when I pull them apart to check everything. I don't think anything is wrong but I want to check the guides and valve job doesn't leak. Seems to be the right thing to do before I install them. They are painted 273 Red and the paint is chipping off the machined faces. If I can, I'd like to get them back to unpainted condition without significantly dulling the machined surfaces. I have blast cabinet but would probably need to tape off shiny areas which seems like work and that crap gets everywhere. Anyone done this? Paint stripper? Bucket of carb cleaner? If I have an engine shop do them, will they come out unscathed? I would rather keep them unpainted if I can get them looking decent.