My first batch was in the Keg for a few days before I realized it was about 62 degrees. I moved it to a good temp, and let it sit another 2 weeks. I then let it sit for 2 weeks at recommended temps and then moved it to a cooler room (probably low 60's). Then, after two more weeks I tried it and it was a bit cidery and very heady. I then put it back at the recommended temp and let it condition another week, and it now tastes great, but is still over-carbonated. Could the numerous temperature changes affect the carbonation?