Zwift Ride Thru axle tightness

When I tighten the rear thru axle so that the rear end doesn’t wiggle it’s so tight that I can’t back peddle. If I try to back peddle it “drops” the chain. What am I missing ?

Thanks, Scott

sounds like might be missing the drive side spacer on the trainer.

You might be missing the drive side spin cap. That’s a common reason for the frame binding against the cog when the thru-axle is tightened.

Thanks, I’ll give it a try