The Sonnax servo was installed with a snap ring to hold it in place. This unique piece offers 40 percent more surface area for better holding power in Fourth gear. This helps eliminate band failure in high-performance applications. It is simple to install with only a set of snap-ring pliers required. Just be sure to use the supplied steel washer. There is some adjustment to be made here, though: The typical travel of the servo pin is 0.125 inch; if it is greater than that, the pin should be changed or carefully ground down to achieve the desired travel.