I have an old set of plans for the 17LT, and they do not explicitly describe the way the deck radius should be planed on the sheer clamps. They only indicate that both cockpit and fore deck beams should be of 16" radius.
Given the shape of the bulkheads, I assume that between the cockpit deck beam and the aft bulkhead; i.e. over the length of the cockpit, the deck radius needs to roll from 16" to whatever the aft bulkhead's radius is. But that's only a space of 32".
Do I have this right?