I always use broadheads in the inserts when I am gluing my inserts in, for the first time. Broadheads will let you detect a out of line insert a lot better than just a field point. You can turn or twist the insert to get the prefect spin before the epoxy glue dries. Carefully screw the broadhead out, with out moving the insert. You want to make sure the epoxy does not dry and glue the broadhead to the insert! Wipe off any excess glue and let it dry.
You can screw a field point in the arrow then slowly and carefully heat up the "field point" until the epoxy just starts to melt, then you can turn the inserts and try to realign them that way. Be careful not to overheat and DO NOT apply heat straight to the carbon shaft.