I've done them in a couple of big box office supply stores and haven't minded them. Fairly easy and never encountered a problem. I don't feel comfortable doing them in the electronics store though, and I can't explain why, it just is.
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Have PV-500 & willing to travel.
"Answers are easy. It's asking the right questions which is hard." (The Fourth Doctor, The Face of Evil, 1977)
"Somedays you're the pigeon, somedays you're the statue.” J. Andrew Taylor
"I have never met a man so ignorant that I couldn't learn something from him." Galileo Galilei