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Message: [QUOTE="lb423, post: 1434258, member: 124790"] [b]Help!! 2004 CR250 power/flap/exhaust valves[/b] Hello, I'm a newbie to the forum and looking for some advice. I have just had my barrel sent away for repair and I am in the process of putting it all back together. Here is my problem, the repair guys took the power/flap/exhaust valves out to repair my cylinder and I can not seem to get it back together right. I have manage to get the spindle/shaft through both valves but it wont seem to push into the other side of the cylinder, it is about 5-10mm off. It seems that there is some sort of rubber in the hole and it just bounces back when I try to hammer it in. I have attached a couple diagrams showing the bit that wont go into the hole. I'm not sure if the rubber is suppose to be in the hole? would that be anything to do with the guys that machined the barrel? Any help would be appreciated, thanks in advance. [/QUOTE]