Hey Mike, All my planes have R-Thrust built in to the firewall from the factory....That is my gripe...and there is tork pulling the right wing up because of that too...which gives a what everyone calls coupling....so what i was asking is if anyone else can tell (feel) the same problem...if it is a problem....not sure how my Yac is going to fly without-it yet but from what i can tell it should (from common sense), cure what is bothering me...I hope...we will see