I got this new to me bike, needed the valves adjusted off the bat. Got the Service Manual, did the adjust. Screwed it up. What I did: found the TDC scribe line on in the inspection hole. Adjusted valves. What I should have done: Found TDC on the compression stroke. Valves are probably all way out of spec now, and I'm trying to figure out how to find the compression stroke. Suck, squeeze, bang, blow; how do I know where I'm at? Both sets of valves' lowest clearance should be bang, so do I turn three revolutions past that to find where I need to be? Edit: Watching the valve train and engaging the brain. Not three turns, half turn? Intake valves open, exhaust closed on intake downstroke, both close comp upstroke, ignition at top of compression up stroke, valves closed power downstroke, exhaust opens for upstroke?