Is this Demon just junk or am I just junk at dealing with it?

Alright, so I watched the videos. They were helpful to refresh me on the various circuits. I loved the part where the record had to be flipped. My how times have changed as far as media.

As for the secondaries, here's a pic. You can see how, even with the curb idle adjuster pulled completely off the linkage, the transfer slots still show about .060" below the throttle blades. There's just no way for me to see how I can get the blades to adjust further to only show the .020" that I can get with the primaries.

View attachment 1715537087
Thanks.
We can see the blades are not stick in the bores, or sure shouldn't be, so what's hitting?
How about the linkage? Could that be it?

Holley still has the pdf from when they took over and they certainly expected the secondary ilde/t-slots to be adjustable down to .020 or less.
Demon 1282020 650 CFM Speed Demon Carburetor

There's a slim chance someone filed the t-slots longer, but the geometry doesn't look like that's whats going on.