What are the most common reasons a power valve would not open until 3/4 of the throttle. I took off the bolt on the left side of my 01 cr250r to check out my PV response. It starts at L when idle. When you give it gas its supposed to turn 90 degrees to H. Well mine barely turns at all in 1rst. I have to really coerse the bike into PV in first! I have to open the throttle 3/4th of the way for it to turn at all in 2nd. After that the response is better, like in 3rd gear, 4th and 5th. But I having a lot of trouble hitting my powerband. Its sucks cuz thats my favorite part of the bike. I feel like im riding a really heavy 80. Suggestions?? Answers maybe.