The plastic bushings on the flow redirector on my jet had broken off and the part was rattling like crazy. This is the part that kicks over the nozzle to give a jet reverse. I took it off when I figured out what the rattling was because I didn't use it anyway.

On my next trip out with some of my buds we fished all day and had a real good time, caught fish, had a good lunch and all. When I came back in to the boat ramp I head straight for the rock bank and threw the boat into reverse and gunned it. OOOOPS it didn't slow down!