I put one on my 19 a few weeks ago. The engagement is kinda soft with the stock setup. Full throttle is fine. I only have 400 or so km on it so far.
Initially, I transferred over the steel ring but it really doesn't seem to centre well and sure enough l had a noticeable vibration around 5k rpm. Without the ring it's better but not as good as the Team was. I should check the weights for consistency.
On my 3rd Team but warranty is done now so will probably go to an adapt if this one cracks. Didn't think they fit the 19 taper but good to hear they work.