I'll try that If I get time tonight. If not it will be later this week. I had it apart once to replace the valve oil seals so it is absolutely possible it could be off timeOk, I would forget about carbs or ignition for now. Your number one problem is lack of compression. I don't have a manual for this bike but I would guess it should have 140-150 psi.
The first thing I would do before tearing it apart is to triple check the valve timing and the valve clearances. Valve timing being off by only one tooth can make a huge difference.