Sorry if questions of a similar nature have been posted before. Has anyone tried or know of anyone who has tried to switch out the built in amp of the CMD 102P 2x10 combo with any other similarly sized Markbass head (Little Mark Tube, for instance)?? If so, was it successful and was it pretty easy?? Or was it a disaster? Are the emblems on the speaker grills screwed onto the grill or glued on?? Thanks ahead of time for any information.