For the second time in two years my B3350SU would not complete a parked regeneration Had the dealer pick up tractor. The reformer needs to be replaced. I had one Reformer replaced under the original 5 year Emissions Warranty. Since then the dealer replaced two more reformers and a burner pot under the Lifetime Emissions Warranty. In total over $10,000.00 in parts and who knows how mush labor and I have yet to pay a dime. The tractor cost $28,000.00. Seems it would have been cheaper for Kubota to buy back the B3350SU's.