Mancini Racing adjustable pushrod

Has anyone used the Mancini adjustable push rod? I got one for my Duster to use with their aluminum master cylinder and adapter kit. It was way too long adjusted to it's shortest. So I called and the guy who answered said, "Oh yeah, you have to cut a 1/2 inch off each piece for A bodies". No mention of that on the website or in the provided instructions. So I did that, and guess what? Still too long. So I had to cut more off the the threaded rod end, and use a die to thread it further up the rod, and I had to do the same to the female end, thread it deeper. Anyone else have a similar experience?