</font><font color="blue" class="small">( anyone understand how the "quarter Inching Valve" compares to traditional position control? )</font>
Well . . ., I think I do, but not sure I'd want to bet too much on it. /forums/images/graemlins/wink.gif
With the lack of position control or that quarter inching valve, the lever is centered. When you move it, forward or backward, the 3-point hitch raises or lowers and continues to move up or down until the lever comes back to the center. Moving the lever farther forward or backward only affects the speed with which the 3-point hitch raises or lowers, not the distance it moves.
With position control, the lever is not necessarily centered, and it may or may not be numbered; e.g., 1 all the way forward for lowest position of the 3-point to 8 all the way back for highest position of the 3-point. The lever always stays where you put it; e.g. if you put the lever in the center, the 3-point raises or lowers to the halfway point, stops, and stays there.
With the new quarter inching valve, the lever is centered. If you move it far forward or backward, it works just like one without position control, but if you move it just a little ways forward or backward, the 3-point raises or lowers that "quarter inch" and stops even if you have not gotten the lever back to the center quickly enough.
Now at least that's the way a salesman explained it to me while I was looking at a B7800, but I didn't actually start it and try it out. So it seems to me that the new quarter inching valve is almost as good as position control, but not quite in my personal opinion.