I was out riding my trx450 a couple weeks ago and it ran fine. The following week I had a hard time getting it to start, then every time I let go of the throttle it acted like the throttle cable was sticking. So I took a look at that but it wasn’t the problem then I looked at the slide in the carb and its not sticking either. I had to reshim my intake valves a couple weeks ago because they tightened up, so I went ahead and checked the clearances and found out they tightened again, I’m going to replace the valves next week. Is it the valves causing the hanging rev, what else would cause this?