I'm noticing just a little bit less ease of hot starting on my YZF, so it's time to check the valves and see what they're doing. Done plenty of valve adjustments on various 4-strokes, so that part isn't a problem. It's mostly the EFI and fuel tank stuff that I'm not experienced with yet. This is my first EFI bike. Running Mobil 4 Racing 4T oil, Scotts SS filter, oil changed 3 times now, clean air filter every ride, lately been running 50/50 AV gas. I have the IMS tank on mine, which means a total mission of removing the subframe and silencer as well, so I'd prefer to just do this once, and any tips to avoid making a complete mess would be appreciated. Do I HAVE to disconnect the fuel line to access the valve cover? If I disconnect it, how does this system prime after re-connecting? Anything else weird to be aware of in terms of access? Can the tank be drained from the bottom/fuel pump easily? Does the header pipe have to come off to access the chain tensioner? At this point are there any other good-practice maintenance items to do while I'm in there? Anything with the throttle body or fuel pump or injection system? Thanks in advance.