I put a new piston in my '08, started fine but the decompression pin stayed engaged. It made a lout tick obviously, until I rapped it out on the track, took a 1/4 lap riding hard to stop ticking. Now I can barely kick it over, I can but I'm afraid of tearing my ACL. I took the valve cover off and noticed the decompression weight had not returned to where it should have. So I grabbed it and wiggled it a little and the weight went to where it should. It's now easy to kick over but it does the whole process again. I took the cam sprocket off and tried manipulating the decompression shaft by hand and noticed it sticks lightly. I got the manual out and the pin is installed properly as was the shaft and weight assembly. I'm planning on checking the decompression pin for burs, but until I try that I was wondering if any one has experienced this and if there is a simple remedy. Thanks.