It's not likely spark plug, HT wire, coil or CDI or power to them. They all must work to idle and there's no reason to cause them to fail just above idle (unless some connection is intermittent and breaking connection from vibration - not too common).
It is most likely carbs (most ppl don't get all the jets and passages cleaned out well enough), parking brake switch wire (cut green/yellow near the CDI) or reverse switch wire (ground green/white near the CDI)
You rebuilt the carbs? What EXACTLY did you replace and where did you get the parts?
'01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, jetted, K&N
'01 Polaris Scrambler 400, K&N
'02 Honda 400ex, Big Gun pipe, jetted, K&N, Lonestar +2 A-arms, Lonestar anti-vibe
'04 Suzuki LTZ400
'16 RZR XP4 1000 Turbo
Last edited by QuadManiac; 06-08-2019 at 10:58 PM.