The thing that sticks out to me is your hands are extremely smooth during your turn-in and I don’t see you trying to “jerk” the steering to get the kart to turn in more.
This combined with the things that stand out to me (short rear hubs, only one strut per side, loose rear bumper, and max rear width) as reducing rear grip, are what prompted my responses.
Cheers and please let us know what you end up finding out! 🙂
November 15-19, 2017
Las Vegas, Nevada
SKUSA SuperNationals 21
2018 Events TBA