I've noticed a lot of frustration here regarding the manual adjustment of the print bed. I got frustrated, too, but took a different approach to a solution.
My approach to leveling the bed is to tighten the bed springs down pretty tight, and then move the Z stop and 'up' software commands in combination to get the nozzle 'pretty close' to the print bed. Then I loosen the adjustment screws/springs, using the sheet-of-paper trick to get things complete.
With the 'stock' springs, this approach was arduous and time-consuming for me because, as I saw it, the springs didn't have enough travel. So I went shopping for 'taller' adjustment springs. After trying several sets of springs, I finally got some that work for me.
I got a set of eight conical springs -- the conical shape keeps them basically concentric and aligned, with a satisfying amount of stiffness. I got them at the local lumber-store chain, in the hardware/fastener section. According to the package, they are 7/8" by 1/2" x 7/8". Part #88233, barcode # 7 38287 88233 9.
I now can manually level the bed in a couple minutes, and don't feel the need for an auto-leveling device.