My cousin bought the 21xrd with the 250 Suzuki a few years ago. It ran very well , around 80 loaded two 250 pound men and bass pro shop on board and a talon. It would turn the 30 and 31 pitch Suzuki props to the limiter any day every day . Bought a 32 prom ax for it same thing. The boat just didn’t want go any faster , would becomes very loose and odd feeling steering wise and blow out every time right before it was really getting free. We figured it was just at the limit lower unit wise. Sold it and put a brand new 300xs on it. Have continued to fight same issues around 85 with the sport master. After running it hundreds of times between both of us determined something is up with the sea star steering. Just recently put completely new uflex system on this winter. Will now after this weekend if cured. By the way third 21 300xs he’s owned.