Holley/Demon Carb stumble

Here’s my perception of what’s going on in the video.......
The motor doesn’t really sound “sharp” with either carb.
Basically, it comes across to me as a combo of...... cam is too big 408 stroker, Hyd roller.562/.550, 243/247@ .050(@.006" 294/297 duration. Lob Lobe Separation @106 and i degreed it in at 101/CR is too low 12.87:1/not enough stall 4200 stall(nowhere near enough stall for a bracket car imo)..... probably mostly elevation related.6600' elevation, adjusted is anywhere between 7200 and 10,000 foot.
Most of the time it's 8 to 9 Thousand foot adj altitude
What’s the track elevation there?
I shift at 5800 rpm

I not arguing any of your point but adding answers to the questions.
Where do you think my weakest line is?