I was just shooting my bow when i noticed the cable guard moved, i moved it back to where i thought it had been and tightened it down but then i noticed that my arrows where tailing to the left some when they hit the target. I am not an expert on stuff like this so i have no idea what to do now. Also how did the cable guard come loose, maybe really bad vibration?? Thanks for any help

Vibration will do that. When you set it back you'll want to leave just enough room so you don't get any contact with your fletchings. I'd almost think you may have a bit of contact by the way your arrows are hitting the target. You also don't want too much clearance and this will cause added stress on your string and cables.

On my bow the cable guard is at between 1:30 and 2:00 o'clock. I've got less than a quarter inch of clearence but no more is needed.

hes right just enough for good clearance put some baby powder on you fletch (not too much) and then shoot where ever there is white on the bow is where they are hitting hope this helps.