Clutch releases too far out

When I bought my GT the clutch quadrant was bad. So I ordered this new quadrant/adjuster/adjustable cable from Summit Racing. As it happens, the original cable was good so I decided to stick with that instead. It's a two-position quadrant and the clutch cable is in the first (closest to firewall) position. The adjuster is seated against the firewall so there's no adjustment left to shorten it.

I tried the adjustable cable and the clutch was almost impossible to work. But the clutch release point was about 2 inches from the floor - just right.

The problem I'm having now is that the clutch releases about 1.5-2 inches from the top - as in the pedal is almost completely out before the car will move. There's no slack to adjust either. If anything it seems that the cable might be too short rather than too long.

Any ideas?

I did remove the rubber grommet and filed the 4 teeth off so the housing would fit into the firewall adjuster.

I compared the lengths of the cable housings and they seem to be the same. The end at the quadrant is on the hook closest to the firewall, so it's as long as it can be.

The only thing left to double-check is that the housing end at the transmission is seated properly.