I’ve been working on my buddies all stock 75’ 650. (I did not check the ignition timing first) Bike hasn’t ran quite right since he got it. I was checking out the mech advancer and found it stuck in full advance. The mechanism was pretty sticky. I had a spare (new) advancer setup for my 81 that I put in it. The parts looked the same to me. I go to check the ignition timing with a light after installing the setup. (I assumed the ignition needed some attention since this bike is pretty crusty and appears to be all original) The timing for each side was too advanced. -No big deal, I’ll just adjust it- Here’s the problem. I could not retard the ignition timing enough to get to the F mark. I was at least .500” advanced or so. On both sides. Couldn’t get it down any more. Idle was around 1100 I checked the points gap. Set to .012” Attempted to set static timing- still can’t get the timing retarded enough. It’s very close static. But the adjustment is maxed out. The advancer shouldn’t have any effect on that, right? All the pins on the advance rod are correct. I can’t compare his bike to mine, because I have an electronic ignition. So other than the mech advance, nothing is alike. I start the bike to check full advance, and I watch the mark shoot literally to 10 o’clock. Wtf? And it idles back down to where it was originally set. Max retard is .500” advanced of F To clarify. Advanced of F. To the left of the F as if you were looking at it from the ignition side of the bike. What is going on with this thing.