Although my camera didn't exhibit the flare (and I tried extensively to get it), I sent mine in for the fix. The service order description was:
RPL FRONT BODY
REPLACE RUBBER GRIP
RPL REWIND SIDE RUBBER
RPL CF CARDHOLDER RUBBER
ADJ AUTO FOCUS OPERATION
CKD COMMUNICATION
CLN CCD
GENERAL CHECK & CLEAN
Although they said they cleaned the sensor, when I got it back & tested it there were two BIG dust spots that I couldn't remove with a blower. My guess is that they just blew off what dust they could, and called that a cleaning.
The flare issue is gone (of course, it wan't there before I sent it in, either).
Al Gentile