That's normal but you might want to tighten it up to about .060" worth of travel, and IME this method usually works but in some cases you will need a longer pin or a way to shim the servo on the pin.
The apply servo can move almost 1/4" on the pin before applying (if not shimmed with no spring), but the pin will be butted against the servo cover, so just depressing the servo cover can be deceptive.