Matt at CHI is one honorable person to deal with, anything that's wrong with what has been shipped be it new or used Corny's (RIP Corny's), Matt will ship free replacement parts no questions asked. I have no connections with Matt but have had 24 great used condition Corny's shipped to me by him.
Matt is my first choice on any other needed items for my next brewing build. I just found a couple boxes of regulators, taps, handles and gas manifolds I forgot I had in my garage storage. What I need to add will be thru Matt first even when William's Company is only 5-6 miles away. great service at 115 miles away from Matt is better than a LHBS only 4 miles away also.
JMO's from my past dealings with the CHI Company. I once had a Corny lid that was a damaged item that could of been hammered straight with brass drifts and some labor, Matt sent another complete one free. This makes one not even think about switching suppliers in my book, why? I'm not related to Matt or the CHI Company at all just a happy customer.