Working with John at Stage Right the 2004R Adjustable servo is here. The servo offers the largest apply surface area and the adjust-ability to fine tune your band adjustment. I have personally had input on the design changes and am very happy with the results. The servo can be used with the factory cushion spring and pin.
http://www.extremeautomatics.com/productdetail.php?product=226&fromc=21&fromt=
http://www.extremeautomatics.com/productdetail.php?product=226&fromc=21&fromt=