Not sure what other "gas line maintenance" you need, but I can help with petcock and hose replacements, and I have replaced the lower o-rings on the intake part on the top of the engine cam cover area before.
Worse case you can come by here in the Denton area and we can get some of it done. I would also like to replace the o-rings on the final drive. Already replaced all the fluids recently. My place in only available on the weekend of Nov 12th.
that was the other maintenance i was talking about. I just want to make sure that I have all possible vacuum leaks covered. That weekend works for me, if my parts come in.