I"m not a big fan of Steve's, they tuned my machine up once, charged $100 and didn't do much, as far as I can tell.

I had a really good experience a few years ago with a strange company called Eagle Enersave, that does sewing machines and... ceiling fans? They've since moved further out into the suburbs but have some google reviews referring to sewing machines, so I'm pretty sure it's the same outfit. https://www.yelp.com/biz/eagle-enersave-thorndale

In fall 2019 I tried to sew a costume on my 1960's Pfaff machine and bits of fun-fur got all over the inside and were, like, melting. My aunt suggested Gary from Eagle Enersave. He fixed the fun-fur problem and tuned it up great. Flash forward a few months, it's March 2020 and I'm ripping up dishtowels to make into masks. Somehow the machine jammed so that the needle and bobbin were out of sync and the needle was jamming into the bobbin case. It was horrible, like the Twilight Zone episode where the guy breaks his reading glasses. In desperation, I leave a message at 9pm on a weeknight on Gary's store answering machine, not sure when the store would ever be open or if he'd get the message. He called me back 15 minutes later, and walked me through a quick adjustment that involved temporarily disengaging the hand wheel in a way I didn't know was possible. And it's continued to work ever since then. A warm memory from a terrible time! Anyways, if I needed something done on my machine again, I'd drive it out there. Good luck with yours!