TroutMaster,

Hey your info is incorrect. Yamaha and Merc build the 9.9, 15, 25, 75, 90, and 115 together. The jets are built by San Leandro Outboard Jets. If they fall off I would be questioning the dealer who installed the equipment. As far as putting the stainless impellars on 115's I would call wooldridge or stevens and ask about performance results with those motors. I think you'd be suprised how bad they faired.