Makes me curious how much preload you had on the original unit. Your weight would suggest you needed to add some preload and probably back off the compression/rebound damping. My weight requires I add a LOT of preload and have NO compression/rebound damping. That's the way I set up the stock unit, and it has served adequately so far. I may upgrade the shock sometime in the future just to get a better spring rate, but so far it's held up to what I've asked from it without jolting my spine. I was out riding it last week and the ride was smooth over most surfaces. That said I did have to drop over $2K into my Bobber's suspension just so it wouldn't break my back or permanently damage spinal discs.