Good morning from down South. I am working to move a round bale to our horse pasture. This is my first experience with round bails and tractors. I purchased a rear spear and have it connected and adjusted correctly, I think. Please see the picture. Here is the problem. As you can see from the pic, everything looks ok. But, if I back up any further the bail starts to push back vs. staying straight and level on the large spear. When I continue to go in reverse, the bail pushes the rear arms and of course the bale starts to move. What am I doing wrong here? Is there a way to lock the arms? Of course , I would have to unlock to raise the bail but it seems there is an easier way. The tractor is a JD 3038e. Thanks all.