Z-bar too narrow?

Here's a head scratcher. To me anyways.

Specs: 1967 Barracuda Formula S, factory 383 4-speed.

Situation: Recently put the 'original' motor and transmission back in after rebuild. Measured everything to make sure the motor is back in it's original spot. It still has the 915 heads on it.

Problem: I also put TTI 1 3/4 full length headers and their z-bar kit on. When I push the z-bar fully towards the bell housing, so the trans side arm clears the header, I'm left with a 5/8" gap between the fender and the fender side stud. Has anyone seen this before? Did I get the wrong z bar from TTI? Am I just completely stupid and have missed something?

PS: TTI instructions had me grind away a **** ton of metal from the pivot arm that attaches to the bell housing and I can't for the life of me figure out why.

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