Hey..Does any body know who's initials are MD( the M and the D are joined together) from the hand writing it looks to be the same as Mike B's ? The amp is dated 11/18/80 on the underside of the chassey withe the initials :?: I also would like to know if any body has called Mesa looking for info just to find that something was modified and never recorded(only the date) :?: Maybe because this amps home was a couple of houses up the street from the old Boogie works?