Kandi 110cc 2015 Buggy / Kart no Grunt and bog in forward

[cfstar_18]

Kandi 110cc 2015 Buggy / Go Kart bog and no low end in forward.

I can’t even get the Buggy to go forward without a push even on concrete (no rider) and won’t go up any incline even with momentum (50lbs kid). Will go strong and 30+mph on a flat once it is going. What I have done:

1) New Carb
2) New NKG Plug
3) Not Lean or Rich
4) Idles well
5) New Clutch
6) Clutch properly adjusted CClockwise until friction then back 1/8 turn
7) New CDI
8) New Coil
9) Sprockets and Chain are in good condition and aligned.
10) Top/Front sprocket dropped from 14T to 12T!
11) Chain has plenty of play
12) No Issue with power or acceleration when up on jack
13) Rips up any hill in Reverse and has tons of power
14) Cart rolls by hand easily so Brakes are not locked
15) Gears spin freely
16) In forward it just sits and bogs until it is pushed and has good momentum but don’t’ even try and turn around because you wont go again.

I have spent hours researching and short of new Motor….PLEASE HELP

[scjeep4.7HO]

Variator roller flat spot or sticking?

[cfstar_18]

I wish. Not cvt