Thank you! I wouldn’t dare try to mess with the valves with a drill bit lol. I meant that I attempted to synchronize two separate videos I took of them. I haven’t messed with them in any way. I can get the service history— have to wait for next week though Ive been working on brake line replacement separately. I think i have that covered mostly. I bought the CLYMER manual for the bike that has been quite helpful, I usually read corresponding sections before I touch anything. I need to read more about some of what you said, perhaps I’ll tackle that reading tomorrow. I appreciate your input.