Today, I sprayed some CRC QD electronic parts cleaner into the camera. I lifted the primary mirror and sprayed the CRC into the opening near the left hinge using the supplied nozzle tube. I then let it dry for a while and turned it on. To my amazement, it has worked perfectly ever since. I have now fired 150 shots without one single malfunction. I am really sold on the CRC stuff. I think it must have just been a little sticky or maybe there was a little dirt on the mechanicals that was irrigated and removed to a safer area by the CRC liquid. The CRC is a fast drying liquid that does not leave a residue and is safe for electronic and plastic parts.