Yup, I just bought a desoldering rig in the last year. No idea what took me so long. Very handy tool. Knowing almost zero about all of these components is what makes me nervous. With no experts anywhere near where I live, I have to send things away to be worked on and I really don't know who to send to. There is a semi-retired guy in FL who sells "rebuilds" on ebay. I know one in TX but he is booked for 18 months at a time. I'm getting way too old to wait that long. I did send a VPI bearing to VAS. Still waiting for a verdict. He is likely to get some re-tip jobs from me as well.
If it's a simple de-solder and solder in a new piece, I'll likely take a stab at it. Between my son and myself, we can take care of the simple stuff. I talk to the guys over at DIY audio too and they are helpful, just speak a different language than I do. EEese.