Just set up a brand new Premium AC/DC last night and discovered my canon auto fires right when it rotates to where it lines up at the canon. Then Steve tells me to press the fire button next time. I have code 1.65 installed, checked underneath and everything looks good. Any suggestions would be much appreciated. I found a couple threads that talked about the opto switch but I had a hard time locating where it was. Thanks in advance for any help.