Serp Pulley from 97 K1500

[panelrodder81]

Hey all, I have a serp pulley setup from a 97 k1500 5.7 that I'm putting on my Vortec Crate motor in my 53 panel truck. I personally took the entire setup off the donor truck so I know I have all the right parts but I've run into a problem. My crank pulley is out of alignment with the rest of the system by about 3/4 of an inch. That 3/4" is sticking further out that the rest of the system. My question is, do I just not have my dampener installed far enough onto the crank or is my dampener to tall and do I need to replace it with a stock 97 unit? I don't have any pics but I think the description of the problem is clear but let me know if more info is needed.

PLEASE HELP!!