Jeff,
I am having the same Messabout problem as described in this thread, but I am not following your update here. I have a bracket and frame both listed as 10". I assume that if I put the frame at approx 9" (outside of bracket). Its OK??? As well, this thread says all frames should be put on the same side of the brackets. Not sure that is possible. At the bow 13'3" I have the same duplication of frame and bracket location. In this case I need to put the frame at 13'4" - the other side of the bracket so that the entire bow and stern assemblies hangs to the outside of their respective frames. As well, the other two brackets to which frames are attached are 1" different in location than the frames, unlike the two noted above. That makes sense to me, unlike the 10" and 13'3" frames.
And rather than start yet another thread, I will ask my other questions here. The stern piece has this big nice hole to lighten the piece. Is it OK to add some smaller holes to lighten it some more? And guidelines on how much wood to leave between hole and edge of frame? Ditto, the bow piece. Your plans have a solid piece - OK to put a hole in that to help lighten it?
The stern and bow assemblies: are they only lashed to the keel stringer or are they glued as well? (I thought I saw a glueing instruction somewhere, but cant find that now). In which case, that needs to be one of the first steps as part of laying the keel stringer, but before the frames are screwed to the brackets?
Figures 98 and 101 in the instruction manual suggest that you only use two frames to level the gunwale stringers - and those are inner frames. Is that true for just that boat, or should I do the same with the Messabout? As well, should only those two frames be bolted to the brackets or should all four frames be bolted to brackets?
No doubt more questions to follow...
thanks
M