Maybe I'm over-simplifying it,but,when I set my valves I just simply bump the motor over til the valve I want closes and comes all the way up :? I know there is movement that the naked eye can't detect but the valve stays shut for some time during operatoin and I don't think that the window of opportunity to adjust the valve is all that narrow.If it's up,turn it a tad and if still no movement SET IT!!! :?: Maybe it's not as simple as I thought