As I said, I don't know if the amount of idle thrust is realistic. most of my planes aren't moving with throttles in idle, just some of them do.
about the interference, this is something I don't have.
My throttle control is good.
maybe it's a problem with your throttles, did you correctly install it's drivers? If you did, I can't think of something else that could cause this,
but then again, I'm centainly NOT an expert in this...

Tyrion