I had to renforce all the cabin frames because they bowed when I did the dry assembly. It's a good thing I saw this. The cabin was assembled while on the hull. Plenty of three hour epoxy was used at all the joints. It took some time to get the alignment right. Luckily none of the epoxy got to where it should not be and the assembly lifted out easily this morning. It also went back in just as easy. You can see that I took advantage of the bow that was in the 3/32 ply sheet I used for the cabin sides to follow the curvature of the hull. Dan.