Timing question

My timing tab only goes from -10 to +10 lol.... I do have a timing tape though, just havent put it on yet...

And thats if it stays on.:D
I measure the degree marks on the damper then continue the markings up to 50 degrees.
Just what I get from your video it sounds like the motor is running rich on the idle and lazy on the timing.
JMO of course.

"All in timing" is your initial idle timing plus whatever the mechanical timing can advance to.
For example, factory distributors are designed to run basically at 0 btdc.
If you start a 12 degrees and then the mechanical adds 30 more, then your "All In" timing is 42 degrees which is way too much or a pre ignition problem exists.
These numbers are just an example.

Set your idle at 12 for now.
Disconnect and plug your vacuum to the distributor.
Then use your light and see where it advances to at 2-3k.
That's where the painted on marks on the damper or the timing tape come in.:D