So I'm putting the power valve back together on my 01 cr250 and I notice that the flap valve shaft goes through the flap valve no question, but it doesn't feel like it goes into any hole on the other side of the exhaust port. Is this the way it is supposed to be. The shaft sticks out almost to where the power valve cover meets the side of the cylinder. I looked at the inside of the cover and I saw some circular mark where I guess it holds the valve shaft in so maybe I do have it in right. I hope someone can tell me if this is how it's supposed to be.