All I know is they supposed to be the best in the business when it comes to Yamaha. Friend of mine back in late 80's and I lived in Springdale bought a prov150 they had turned into a 200. One bad motor. And it was very reliable. He ran it 3-4 years before selling boat. Never had a minutes problem. They were and I guess still are the place Yamaha sent you to for serious warranty work. Just check their reviews.