I had a problem with my 05 gtr50. After much work I got it running, but its not performing the way it should. I can´t get it to go over 20. I was told the jests are to small, so I got a bigger carb, 21mm. I thought, that will do it, right? Just one problem. When I went to put it on, the throttle cable going in was too short. The throttle was stuck half open. What size cable do I need? I´m good with mechanics, just not well experiened with motorcycles. Please any help is appreciated.