So I'm installing a front disc conversion kit on my '66 SS. I attached the booster/master to the firewall and it looks like it angles upward. Is that normal? Also, I'm trying to attach the threaded rod to the pedal. Seems the standard rod which is attached to the booster is too short, but the extension makes it too long (I am using the lower hole on the pedal). I feel so close, but still so far! Any ideas?