TQ secondary not opening up all the way

SD,
Did you read what I said in post #6? The vac port at the carb rear, nearest to the A/valve dashpot is where the dashpot hose connects.
The a/valve blade itself has a notch in the drivers side & that is what you bend to give you the correct WOT position of the blade. I have found the position is not critical.
You need to do the test in post #6 to make sure the dashpot is releasing fully because the a/valve blade will not open fully if it is faulty & the link arm also has to be adjusted correctly.