My idea is a lot less sophisticated and simply cosists of a piece of peg wood with "a hole" at one of the short sides. My idea is that if the size (width) and shape of the hole can be made to (somewhat) fit the end of the regulator arm the peg wood stick should provide the momentum to move the arm in a more controlled manner. Of course, it would still require some instinctive feel, i.e. my "tool" would be more of a helper than an actual tool. Now, whether this would work or not remains to be seen, but if it works (at least somewhat satisfactory) I'll try to shoot a short video of it.