There's a Koyker model 80 loader for sale locally. In doing my research, it lists a dump angle of 45 degrees. I seem to remember that the Dual that I grew up using would dump so that the bottom of the bucket was vertical. So what is the reference for the dump angle? Does this mean that this bucket dumps 45 degrees short of vertical, or is it referenced off of the arms or something? I don't see it dumping very well at 45 degrees unless you're scooping marbles or something.