sportwerks carbs fit and work great if you can get one.... also there is a super easy fix for them which i did to my JPX (picco based) and others do to their orion engine... where the composite part and aluminum (by the high speed needle) meet, run a bead of JB weld around it let dry for 2-3 days and it will solve that problem. i have been running it that way with no issues for 8+ gallons.