My new 5055E cab tractor with Power-reverser and H240 FEL has been delivered to my son's house and I can't get there to try it out until Saurday. My son assures me he will "check it out" and make sure it works properly until I finally get there. He does report that he is having difficulty keeping the bucket tilted down while in "float" back-dragging dirt to fill a ditch. He says the bucket keeps rolling up off the tilted bucket edge and onto the bottom of the bucket. Neither of us has used this model before, but he is quite experienced doing this procedure with my previous tractors, a L3800 and L4600 Kubota, and says he is just doing the same thing here but the H240 bucket won't maintain the angle. Is he doing/not doing something right? I have the tractor manual with me and I haven't received any info on the loader.