HELP! still runs like crap! nothing over 7k

[catmanm8]

Check the spark plug caps...tight fit and 5K or less OHMs resistance through the cap only....this has been common on a lot of sleds in my group.....surprising how a little more resistance causes top end problems

 

[clutch man]

went out riding the last couple days and the sled is still runnin like crap, runs decent til about 6500 where power starts to break up and at 7 k there is nothing. just sputtering.
02 800 edge
360/370 jetting 8-9k ft, 10-62 weights, new 140-320 spring. slp head pipe airbox kit, vf3 reeds, new bellows, new orange ev springs, new head temp sensor, rebuilt fuel pump, this feels like ignition system somewhere, it runs decent at lower rpm, not great. doesnt matter if its on a trail, more noticeable in pow/hills.

any ideas? it did it at 4k ft, too with 420 jets

Put in yellow power valve springs this will help alot, the orange just never open all the way. part #7041704-05

 

[MARV1]

Definitely cdi stuck in retard mode. Had this happen to an '04 600Escape. Install new one and it will run great again.