I just got back from the dealer and the manager showed up after a short wait. He is sticking by the 9 hours labor. I offered to pay for three and let it go at that. He said he could not do that. I asked him why they proceeded to try the forced regen over and over when I made it clear I wanted to pursue coverage under warranty. He said it was not warrantable. I said "you mean according to the Kubota regional service rep?", he said yes and that he would get him to write a letter to that effect but that he was at a Kubota meeting in Texas this week. I told him that it (the letter) better have proof that there was obvious and deliberate misuse on my part if he was going to go to that trouble. I will be calling Kubota today to start the process with customer service.