I just bought a used MC SS valve body when it arrived there was also a gold plate with it that is approx. 2 3/4" long by 2" with a half moon shape on one end and a 3/4" by 1/2" oblong hole and a bolt hole at the other end.stamped on it is the following "NoYoYo Guppy REVERSE FIX Pat Pend Gil Younger. Does anyone have any idea what it is and where it goes.