I have a 2001 suzuki quadrunner 250 4x4. The issue we are having is it only creeps forward in SUPER low gear and only in 1st or reverse. We changed out the oil, new centrifugal clutch and have tried adjusting the clutch screw with no difference. Any thoughts? I bought this as a project for my 13 year old and myself for him to ride when it is fixed. He is getting antsy. LOL I was hoping this would be an easy fix as I used to have the 1985 125's growing up and they were a blast.