There were three big swings out. We lost 16 imps when Alex and I bid to the wrong slam on board 3. We lost 15 imps when Alex doubled their game holding just two aces, four trumps and a singleton in the suit in which I'd made a vulnerable overcall - declarer failed to make the overtrick (!) but the problem was compounded when team mates played in my suit. Finally we lost 11 imps when team mates played in a 6-2 rather than their 4-4 fit.
We missed a couple of non-vulnerable games, including:
I took a pessimistic view given the vulnerability combined with the likelihood that partner did not have three spades. Wrong this time although I'm not sure how good game is, but everything makes! In the other room my hand forced to game over a simple 2♥ rebid.
Update: corrected vulnerability
This post has been edited by paulg: 2013-February-10, 08:01