Helicopters not turning properly with controls

I noticed recently that my helicopters-all models- sometimes wont respond to flight controls especially the stick or yoke. Seems to have been an issue since installing the RAZBAM Harrier model. Seems that the helicopters are being seen as the harrier since turning with pedals is the only thing it will let me do to turn on yaw axis. I feel that the helicopters have taken on the Harrier characteristics. It comes and goes because sometimes will behave normally for a few minutes and then back to the Harrier like behavior especially with the tendency to pitch up abruptly with back stick pressure. The Harrier does this also if you pull back on the stick a little to much during takeoff since the duct angles control up and down.They are controlled by the prop pitch handle which are fully up on helicopters before takeoff. Anyone else had this issue in the past?