On my 06 450f the clutch lever has alot of up and down play in it. I have been taking the screw out evrey now and then to clean the cable and inside the perch. The last time I took it off I noticed it was getting harder to thread on and off. The threads on the screw looked to be getting stripped. Now I cant tighten it up to stop the lever from shaking up and down and flopping around when on the track. Are there any methods that will work to solve this problem? If I take it off Iam afraid it will be the last time. I need to tighten it but it want any more. Would a regular screw work? The stock screw is non threaded at the top part and only has threads from about the middle on down.