I'm sorry I can't really help -- of all the pumps I've repaired in 25+ years, I've had to get into deal with capacitors and internal switches only twice! There are a few guys here who've done some of that, but they're not real active right now.

You might try posting at poolspaforum.com -- they have a lot of pool industry members there. Just watch out for their advice on pool chemistry -- most of them hang pretty close to the pool chemical manufacturer's version of things.