(quoted from post at 20:22:17 08/04/18) Bob, i have the rotor lined up with the factory notched teeth. I have the rotor just before no 1 wire on the cap. I turned the engine to TDC on the button. I rotate the magneto outward and it trips with the rotor perfectly on number one. If I was out 180 it would be very obvious. The thing is, it worked until I removed the governor.
1. Have you verified that the mag is making spark? (Guess you've already answered that!)
2. (Once you've verified you have spark out of the mag.) You wrote "If I was out 180 it would be very obvious."
NO, actually it wouldn't be obvious. All the things you are ASSUMING to be correct will be the same whether the mag is 180º "off" or not.
If the mag is "off" 180º, when it trips at the TDC mark on the flywheel, it is firing (uselessly) at TDC at the end of the exhaust stroke, rather than TDC on the compression/firing stroke.
There's a couple of ways to figure this out... disable mag with kill switch you you don't get a shock from the removed spark plug wire and there's no chance of the engine starting, remove #1 sparkplug, and put a finger OVER (NOT in) the sparkplug hole while a helper slowly hand cranks the engine.
As the engine is coming up on the compression stroke, you will feel air being forced out of the cylinder. Stop at the TDC mark and install the mag.
If you were to crank it EXACTLY one more turn, it would be on TDC at the end of the exhaust stroke, which is where I SUSPECT you have it timed to now. From that point, cranking it exactly one more turn will get you back where you need to be.
The other way to verify the correct TDC is to remove the valve cover.
On the correct TDC, both valves in the #1 cylinder should have clearance between the valve and rockerarm, and the #4 cylinder's valves will be at "rollover", exhaust valve closing and intake valve opening.
On the WRONG TDC, the #1 cylinder valves will be at "rollover", and the #4 valves will be closed with play between the valves and rockerarms.
SO, if you've verified you have spark out of the mag, the next thing you have to do is verify it's firing on the correct. TDC.
NOTE... I'm NOT sure which type of rotor shaft you have (old style or new style) but if it's actually sparking out of all four high-tension terminals in order, the rotor apparently IS timed to the mag correctly.)