Just as slow as before mods..

no, he's not being hounded. he's been told the existing linkage has (clearly visible) adjustment slots to get to full throttle and he's not done it. maybe he should ask the trans' specialist to adjust that when sorting the 'kickdown' side of things. he can only ask.
neil.

That won't do an ounce of good if the trans cable is limiting things, and it likely is. As others have pointed out, the Edelbrock linkage often needs additional parts to get the ratio right. Just sliding the bracket may not be the solution.

Every adjustment requires another adjustment and he's held back on blindly doing things because the internet told him to, which is a good call.