Just wanted to give a shout out for some great customer service from Carlisle belts. I run the 803 belt on my xp 600 rentals and I had a customer take a machine out and blew the factory belt, he replaced it with the 803 spare and within a mile the belt came apart. Literally the inner cogs started pealing away. Obviously a defect. First I have seen after running dozens and dozens of Carlisles belts over the years. When the customer got back I gave him his money back for a ruined day that was not his fault. I then emailed carlisle (it was a saturday) not expecting to have a response until Monday. An hour later I had a email in my inbox. We emailed back and forth and I sent him pictures of the belt. I explained that I didn't have time to send the belt in for a replacement due to the fact that downtime on a rental = loss revenue, so I either needed him to send me one immediately or I needed to just buy another replacement. He sent one off immediately along with a second one to help make up for the money I had to give back on the rental. AAA Service!