Magneplanar 1.5 set screw --head broken off


The top of one of the set screws broke off and I can't remove it in order to replace it (not enough space between it and the panel to get a screwdriver on it). Has anybody had this problem and found a solution, please?
Thanks
hodie
Hold, please. I might have stumbled upon a fix. We'll see.
Thanks kindly
send me a pic Mag dealer
 Best JohnnyR audioconnect@comcast.net