I ain't used it myself or even seen one but it sounds like a good idea. What about fabbing your own since his dont have enough advance. I am going to drill a mini hole in each outer end of the cam slot & use a setscrew to limit the travel of the pins then access it thru the vac adv window to make "total" adjustments without having to take out the center clip/file the welded slots but I just ain't got around to it yet. Holler how it goes for you