Try http://www.sodikart-usa.com/. There is a download section and possibly have setups for a kart similar to yours. Or you might be able to contact them for info.
For right now, have you put your kart up on scales? If you don’t have the scales, does your track have scales that are placed under each wheel? If they do, get the results the next time you wiegh in. Also look at you tire wear to see how the chassis is handling. Most of all, keep having fun.