I've recently ridden a WR250, great bike , after spending the day on the 250 and then remounting my WR400, I felt like I was time warped back to my XR600 days....MUST SHAVE LBS.#. Please HELP. I'm a scrawny 220# looking for that mtn bike feel...I've started with a ti yoshi pipe and silencer, that helped, thinking hubs next. Any ideas???