It won't help the US based OP, but I have just used a fantastic resource in the UK.
Orion Optics UK is a manufacturer of high end carbon fibre OTAs based near Stoke on Trent.
OOUK recently serviced my Celestron 8" SCT for merely £120. This entailed removing, cleaning and realigning both mirrors and corrector plate, tightening and lubricating focuser, replacing Phillips screws with easier to collimate Allen Key screws and factory recollimate. My scope has never been as good, far better than on original delivery five years ago. OOUK will service any make/model. It was a 400 mile round trip for me (twice) and the service took a week given they clean mirrors by soaking in a mild acid solution. They can regrind and recoat where necessary.
Surely there is a supplier in the USA that offers a similar resource? Much better than DIY.
Yea there is a number of those I know of in the US. However being located in the north central part of the US everything is VERY far away. I know of shops located on the west coast, east coast, and ones in the southern portion of the US. Nothing anywhere near me, as far as I know. It is not an issue of a few hundred mile round trip. Were talking many hundreds of miles one way. The size and weight of my scope makes shipping prohibitive. I would likely pay just as much in shipping and servicing as I did for the used telescope to begin with. I wish I had the option to send it to get professionally serviced and cleaned but I do not think that's really feasible.
Edited by Traffalger1698, 27 September 2020 - 04:08 PM.