I just went and measured mine, on the trailer in the shed, and the bows are 1/16" farther apart than the sterns at rest and unrigged. I expect the platform, from the main beam aft, flexes very little under load but the bows may come in measurably. In the Worrell in 2001, Jamie's boat got mashed at Jensen and they sailed the rest of the race with the main beam tweaked enough to bring the bows 4" closer together than the sterns. Yes, it was slow, and yes, we had hell tuning the rudders.
Look forward to seeing you at Port A!