Originally Posted by IndyRC_Racer

Which TT-02 kit? What upgrades or hop-ups on the car?

Couple of things come to mind...
- Did you use trim or subtrim to center the steering servo? Are you using adjustable turnbuckles on the steering?
You may not have centered your steering properly either mechanically or in the radio which might be giving you too much turning. If your radio supports, check your EPA (end point adjustments). Also you want to use SUBTRIM to finely adjust the servo as using trim can cause more steering in one direction vs the other. If you only have Trim on your radio, then it is very import to make sure you mechanically adjust the steering as close to centered & symmetrical as possible.
I centered with subtrim. ATV is 64/62. Physical turn circle is with 1/2" measured on flat ground. Approximately 6ft diameter ( I don't really care about the size, I mark both left and right distance from a fixed wall and then adjust the tighter circle direction out to meet the wider circle direction. This prevents going into travel bind. Horn is in the correct spot. Zero binding. No epa buzzing. The car takes off/drives/backs up perfectly straight from left turn or right turn.

- Is the car balanced side to side?

Damn near perfect. See the scales picture. Better than most my X-ray are. Cross weight is 50/50. F/R weight is 47/53. F/R is 11g (3%) heavier than the F/L. L/R is 1.6g heavier than R/R.
Set the car down on a flat level surface. Use a round tool such as hex driver/thin Philips screwdriver/hobby knive to lift the rear of the car under the centerline of the chassis until both tires are off of the ground. Does the car want to lean to one side or the other?

- Have you checked droop or the down travel of the suspenion?
Droop is non adjustable but is very even when measured on my Arrowmax setup station on glass. The shocks are with.05mm in length. Double checked.
It seems like when you are turning left the left rear tire might be lifting or not maintaining enough contact with the pavement. Is the left rear suspension traveling down as far as the right rear suspension. If there is a mechanical issue prevent the left rear suspension, this could cause this behavior.

- You cross weight/corner weights look off in your earlier post. It is very close. I tried using the thin preload spacer on the R/F to cause a little more push on left turns and the car pulled to the side under acceleration and it didn't stop the cornering issue.
It looks like you don't have enough weight on your Right Front & Left Rear. If you are using adjustable shock collars, I would at least add a thin shock collar spacer to the right front (or adjust the threaded shock collar). This will help prevent the right front suspension collapsing so much during left turns under power.

- Did you measure the springs to see if they are the same length and/or spring weight?
I swapped complete shocks. I swapped axles. I swapped hexes. I went circular on the swap corners, so L/F became R/F, etc.
You mentioned swapping shocks, but did you keep the springs on the same corners or move those as well? If you swap the springs from LR to RR and vice versa and the problem follows the spring, there may be an issue with the springs.