I didn't realize that you spoke on behalf of Chris regarding providing service ( maybe Chris would confirm he will not provide service to anyone who did not buy from him originally).
I have a Hightower deluxe I bought used around 7 years ago and have contacted Chris on many occassions and have met him the last couple of years in Valley Forge , and he has yet to tell me he can't help me out ( and have bought from him many times).
Although I seldom post here, I probably spend an hour a day reviewing posts to gain as much knowledge to make me a better repair person/cue maker, but this post should have ended with a concensus that yes it good to circulate used goods as long as it's not a reproduction, period........