Very much so. My dealer, which shall remain unnamed, gave me a great non-answer when I asked if they'd used the diagnostic tool and taken it for a drive. Their non answer was my answer. The shop and the mechanic have been great at communicating, great CS, just Not effective at fixing this particular issue. The mechanic called today and I asked him, since they and Yamaha know there's a problem, but can't find the cause, have they used the diagnostic tool and run the bike, then examined data afterward for signs of the problem. Mechanic was very measured- he said the on board diagnostic can't be used while the bike is being ridden. He knew what I meant. When I explained further, he was honest and said they didn't have one, and it was a bit of a delicate situation, couldn't discuss further. Good on him for being honest. They're still looking. Now- here's for the interesting part: I called Yamaha corporate. Said my dealer and shop are treating me great, but they can't find the cause of this problem, occurring with a Yamaha product, under Yamaha warranty, using a certified Yamaha mechanic and the Yamaha tech line. Yamaha's only response was- you can try another shop. No escalation, no nothing. There were more in depth conversations both with the mechanic and with the Yamaha rep that I won't share here. Most interesting factoid- despite a detailed recount (from the shop) of the things Yamaha said to check and paid to check on the Last unsuccessful visit for the problem, Yamaha tech line doesn't show any tech line contact for that visit. They show one months later, not close to either of the only two visits to the dealer the bike has ever had. Long story long- deciding whether to move to a different shop or gamble and change the TPS. Just proves the ion more correct. Dammit.