One time it was rocking a bit, but that was my fault as hadn’t secured the bike properly.
I think I put it in a bit crooked and didn’t tighten the quick-release enough.
After I corrected that it went back to normal, I have a training mat under the bike/trainer so that helps with the absorption.
Saris has always been good to me. One with a rack issue and the other a power tap hub a few years back. No questions asked. Which is why the Hammer H3 will be my next trainer. Especially with the price at $999