Hi Greg,
my guess is that the beam while bolted down firmly is still moving.
My experience with 1111's beams was that with previous owners beams had been allowed to move around, so the holes in the timber under the deck had slotted oversize to the bolts.
This was fixed by taking the beams off the boat, filling the existing bolt holes with an epoxy microfibre blend and then re-drilling the bolt holes using the beam bolt holes as the guide.
This sounds simple, but in the case of 1111 it came with some complications
. The dolphin striker had bot been riveted to the beam (it just relied on the beam bolts to hold the tension) this was part of the reason the bolt holes had been elongated, the timber gets worn throgh with side load. Next I discovered the boat was not maximum width, so do I start again, new beams? But that will also mean I would need a wider tramp
.
So I guess I am saying watch out for opening a can of worms