On January 1 I brewed my first all grain. It was a red ale and extremely simple. I ended up getting just over 75% efficiency and everything went very well. I bottled just over 4 weeks ago and it's barely carbonated. I've checked a few bottles over the last two weeks and noticed in the last week that my carbonation is no longer increasing. I understand that patience is key but it's pretty clear that this isn't going to get more carbonation. My temps have been consistent around mid-60's from ferm on and I used about 5.5 oz's of primer sugar. Now when I look back at even the beers I've done partial mash I've also had problems getting anything more than a little carbonation. Typically my carbonation lasts about 5 minutes after opening the bottle. Any ideas what I'm doing wrong? Please help me out. As cool as it would be to start kegging I'd like to figure this out.