I read some postings about acid problems. Strip Rite does not use acid or chemical stripper in their process, just electrochemical stripping which is just a sodium solution and electricity so there's no need to worry about the old stripper residue problems. Any metal prep will quickly clean off any light rust. The biggest problem with stripping is getting primer into all the nooks, crannies and pinch welds. If you don't, you'll have rust issues. The hot ticket is E-coat dip that draws a primer into every bare metal spot. Unfortunately it's expensive and few places do it. Wish is was more commonly available.