Dubbel Trouble

This last year began our first beer making experimentation. We started with an IPA in September, followed by a Chocolate Hazelnut Porter in November, and then a Belgian Dubble in Febuary (currently we're working on a Koslch). The IPA and Porter turned out great, but we've been having problems with the Dubbel.....the head is lacking.....no carbonation. Hmmm. With the Dubble we used a liquid yeast for the first time and this type of yeast requires a higher than normal temperature to activate and do its yeasty thing. I'm hoping that by putting the the primed bottles in a warmer location it will wake up the yeast so it can convert the corn sugar into carbonation. Fingers crossed. We tried a Dubbel last night and it seems that there is a bit more carbonation...we'll see. If this doesn't work then i plan on calling our local beer Guru "Kevin", owner of Main Street Homebrew Supply Co. out in Beaverton. We've been getting supplies and advice from him from the start and I'm sure he'll have a better clue, but hopefully the yeast are just being sleepy.....Dubbel dubbel toil and trouble; my mouth burns for some bubbles.