Preval 0940 Handle Stop Review

I bought this to replace the original Preval grip on my Preval Vfan atomizer. It only seems to work one way - that is, if you turn the device inward to limit the travel of the needle and thereby limit the amount of paint sprayed, it works. However, adjusting in the other direction does not increase the distance the needle travels, it remains locked in its previous position. The only way to get it to work is to loosen the 2 end adjustment screws, turn the exposed metal end by hand, and then and…