IIRC, you may need to set the neutral bandwidth to 0 (via the Hotwire).
Check your subtrim too.
i had the exact identical issue with my 3pjs. i couldn't figure out what the issue was. i had 3 different car profiles on the TX, 1 worked with the tekin while the other 2 didn't. i just couldn't calibrate the tekin when using those profiles. i ended up copying the setup profile that worked, as baseline.
