Initial timing

Ok so heres some readings and I'll post video(s) shortly.
These are with VA unhooked and hose to carb plugged.
Rpm 700, initial 15.
Rpm 1500 timing approx 22/3
RPM 4K, timing approx 25* and no more advancing.
Next is when the symptoms really showed up.
VA hooked back up.
Rpm 700, initial 15
Check out the video, I try to increase rpm and it stumbles/back fires like crazy. If I unplug VA hose it levels back out.
Thanks all