If your new C5 is like my G5 was, after checking the wiring to make sure it wasn't going to rub on sharp metal edges and covering the metal edges with some split tubing, there wasn't much to sort out.
Yah, I did check the nuts and I found one that holds the rear fender to the seat downtube loose but that's about it.
Oh. Yes, I replaced the Bosch spark plug and after 3500 miles I replaced the rear chain.
Actually, except for adding some aftermarket stuff like a rear rack, crash bar and 7 inch headlight there wasn't much to do except enjoy riding it.