Gents, do any of you know what size bolt is used in the KMG tool arm for the Rotary Platen? I got mine in yesterday and there was no bolt included. It is the compression style arm. It looks like a 7/16 but a 7/16 will not start in the threads. The threads may need to be chased but I want to make sure I KNOW what size it is prior to doing anything to it. It is like being given a big bag of candy and then told you cant eat it. Dang it!!! Thanks in advance! Curtis P.S.