So the hotcams refill kits came in yesterday. I managed to find some time to put the new shims in and remeasure my clearances.
12 of the 16 valves were too tight. After remeasuring, all 16 are well within there averaged spec.
I did use the mirror method because I didn't want to pull the motor, and really worried the cam chain may have moved over a tooth or so.
I did make several marks to be able to put it back as it was, but still worried it may have come lose from the bottom or something.
Also I had to undo and redo the 20 bolts twice because the cct wasn't extending for some reason the first time.
1. Which way does the cct go in? The little latch thing facing up or down?
2. What's the absolute worst thing that can happen if I didn't do this right?
I did rotate the motor by hand after everything and it felt the same as before. There is a "tight spot", but it was there before I touched anything as well.
I didn't try turning it on simply because I'm scared AF.