I have a 97 zrt800 and i'm having a problem with clutching. I have ported 900 jugs on it with stock pipes. Primary has polaris red with stock weights. secondary has yellow with green stripe in fourth hole with a 64 60 helix. It pulls like a bear on the top end but lays down out of the hole. I' looking for help on a ice set-up and gearing, any help would be appreciated.