Very light steering wheel vibration

2018 TRD off road 4x4

Had my lift (5100s, 887 coils, taco lean spacer, 1.5inch aal but ended up with about 1.75 inch rear lift) installed a while back and noticed very slight vibration (steering wheel) a couple weeks after (tbh, not sure if it was there prior to lift since vibe is so light). Vibrations seem to happen when passing/slowing down through 18-25mph on really smooth paved roads. Vibe is not there if i accelerate fast through those speeds.

Ecgs and 3/8 carrier bearing drop kit was installed during lift install (took CB spacer out and vibe was still there too). 2.5 degree axle shims were also installed to see if that would help, but it did not.

Vibe does not go away in 4h, as expected since i have the ecgs.

Tires were road forced balanced recently but did not help.

Any other ideas?

 

Warped rotors maybe? I needed mine turned at 10k

 

I read some things about that too, but would warped rotors cause this vibe while not hitting the brakes at all too? It vibes at a constant 20-25mph and also coasting back to that speed range