'03 Vinson 500 Auto - need help!

[matbogbry]

I have a 2003 Suzuki Vinson 500 Auto. I recently cleaned & rebuilt the carb, as well as, the petcock. Now it starts, idles and generally carburates well. My problem is that it will not rev out and only runs about 30MPH in high range. It runs smoothly from stop all the way up to top speed and it does not cut out, pop, or anything at full throttle. I am stumped! Any help would be appreciated.

[DirtDemon]

First thing I would check is the throttle cable adjustment and the throttle stop. The carb slide may not be opening all the way.

[matbogbry]

Thanks for the response. I did check the throttle cable and adjustment at the carb. I also check out the slide, which is raised by vacuum pressure. It appears to be sealed well and opening all the way. I took it apart and put it back together, being very careful to make sure that the rubber seal on the diaphram was seated correctly. Any other ideas?