Picked up a old TRAM DIAMOND 60.Works well as you know it is a 23 cha.upper and lower side band. Need some INFO. on this rigOn the right of the rig all the way in the back there is a hole it is counter sunk it looks like some kind of ajustment i would say like the bottom of a d-104 stick for the amp.DOES ANYONE HAVE INFO ON THIS RIG 73s RAY AKA COATHANGER N.E. P.A.:headbang