Air/ fuel tuning
could it be the jets taking over at 60mph or is that way too late ,
at 50mph 14 then at 60mph im getting mid 12
As the other guys wrote, yes. As long as you're talking steady throttle cruising, somewhere around 60 mph the main circuits dominate the fuel contribution.
At part throttle acceleration, they come into play atsomewhat lower speeds.
idle neutral we have 1500rpm 11" vacuum best
then in gear i get maybe 1100 with 7" vacuum
that left me with 13.7 neutral and then maybe 14.1 gear
Agree with this too. If you can, work on this first.
Idle speed is high, but your idle mix screws are responsive, so its not out of the ballpark.
This is with a locked timing, so that's making it harder, maybe impossible with this particular combo.
It should run stronger in gear with a richer mixture matched with less timing.
I think if I was there, I'd try resetting the distributor at lower and lower timing. First try timing around 24*, then readjust the idle mix if need but don't adjust the throttle position (idle speed screw). Then do the same at 20 or 22* if it will run that way. See if you can bring the neutral idle speed to something around 800 - 1100 rpm. If you have to open the throttle (or close it), write down exactly how much (1/8 turn or 1/4 turn).