ORIGINAL: Underclocked
That does not speak well for QC. Both of mine are rock solid so far.
You could slide that pin in, make sure you somehow hold everything in position, then tap a tight fitting nail into that pin. I don't think it would ever come off without driving that nail out.
I tried to send a pic of mine but it kept saying there was an error?? Anyway I got ahold of Mark Hendricks from CVA and mines on it's way back with a new one comming. He said from the pics I sent him that it looks like either the dove-tail on the barrel was to big or the dove-tail on the mount was too small, he'll let me know when he examines it. My other ACCURA is fine. Im sure I could have fixed it myself but I did'nt want to VOID my Warranty with CVA, Thank's for the pic!