i have been playing with ciders but cant seem to get the carbonation right. I ferment out the cider down to .98 and once to 1.000. i back sweeten and then bottle. the ciders really over carb. overflow both times. i let them sit once for a week (just like beer), and then tried 48 hours and then bottle pasturized it. no go both times. Any ideas on what i should be doing??