Wtb: black widow and/or gravitar pcbs

They are the same board and so can be switched by switching the ROMs. Atari's retrofit instructions (TM-232) specifies a few other components on the PCB that should also be changed, but I have yet to determine what difference they will make. I plan on attempting the procedure:

http://www.coinop.org/kb_dl.aspx/KB/gametech/grav_to_blkwidow.txt

In any case, I do have one 100% working BW board that I would trade for a BW control panel.
 
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