What kind of car?

THE REST IS NOT A DIRECT REPLY, JUST AN OVERALL OBSERVATION.
The hotwire tuning is really useful with these servos, and I'm just not sure enough people are bothering to do any of it.

Setting center and endpoints independent of the radio makes the steering feel much more linear in both directions. The feel adjustment has a huge impact on "jitter" at center, and if you find the car twitchy on the straights or over jumps or whatever, dial it back a step. The torque and torque delay settings are just the safety settings to keep you from breaking gears. Judging on a car stand, the servos act differently than a "normal" digital servo, but on the track the difference has been very positive for me.

The parameters you can set aren't as numerous as my Sanwa PGS servos, but all of my programmable servos "jitter" on the car stand, on the track they're perfect for what I have them set at for my preferences. The jitter in free air unnerves a lot of people, but that means I have the possibility of snagging them up at a reduced cost if I'm looking for one.

Not saying it's the case for the last few complaints, sometimes you get a dud from any company, but for anyone thinking about getting one of these servos and slapping it in a vehicle without ever plugging it into a hotwire, IMO, you're really limiting yourself. The whole reason for programmable servos or speed controls is to tune to your own preferences. Non-programmable servos leave a lot on the table in an effort to have a "one tune fits all" solution that will have fewer returns for things like being too aggressive on centering, which we've used for decades as an indicator that a servo is on it's last legs, but isn't necessarily the case anymore.

https://www.teamtekin.com/servoguide.html

This guide is far easier to wrap your head around than Sanwa's instructions, and the graphical interface is much easier to deal with as well.

I wish there was a scaling option for the software though, that screen is tiny on today's 4k displays! Can't servo tune via phone, so this is the biggest drawback to the hotwire software on PC for me right now.

For the record, I've never been sponsored by anyone, I like to tinker, and I first got a T180 last year to replace a 160TBL in 2wd buggy just to see if I might find something just a little better. After just a couple tweaks, it isn't coming back out until failure. I have generally liked and used Tekin products for a long time, but I have electronics from a lot of brands, if it works, I don't go replacing stuff to try and be completely brand loyal or anything. I do try and be helpful with stuff I've spent time on, though.

I will also say the included thin servo arm with the "lower" torque models is pretty well useless on anything that doesn't have a chassis mounted servo saver though. Less than one lap on my buggy with no crashes (just one cased jump) and it looked like interpretive art.