So Just an update. The dealer offered me some time on a warranty for the parts and labor on the new system. He Listed off all of the work performed on the work order and is printing a copy. It was a pretty extensive repair and at a quick look it does appear they replaced the entire hst system as well as upgraded it. They have flushed the entire system multiple times showing no remnants or debri in the fluid. So with that said and most importantly the confidence on their part to offer the warranty it settled most of my apprehension and i agreed to the purchase. Due to living 50 minutes away from the dealer, and my schedule I won't be able to pick it up until next week. Wish me luck. Thanks for all the opinions and thoughts. Much appreciated.