Hello,
I found a few bugs when I tested the shifter kart and one while driving with the KC3.
If you go to track with the shifter kart, pull the clutch, press down the gas pedal and shift up to first the kart starts even without releasing the clutch.
Another bug is, when you are in a random gear for instance gear 1, pull the clutch and shift up while the clutch is pulled, afterwards you can't control the kart anymore (it stops reacting on your throttle or shift inputs).
The KC3 kart has bug at its suspension , I made a screenshot because it's pretty obvious.
Keep improving
I found a few bugs when I tested the shifter kart and one while driving with the KC3.
If you go to track with the shifter kart, pull the clutch, press down the gas pedal and shift up to first the kart starts even without releasing the clutch.
Another bug is, when you are in a random gear for instance gear 1, pull the clutch and shift up while the clutch is pulled, afterwards you can't control the kart anymore (it stops reacting on your throttle or shift inputs).
The KC3 kart has bug at its suspension , I made a screenshot because it's pretty obvious.
Keep improving