I am building from the plans but bought the bulkheads already cut from CLC. I found that I had to trim alittle here and there from some of the bulkheads to make everything line up, I used some coarse sandpaper or my woodrasp. Some of it of course was caused by my cutting of the panels but with a bit of tweaking I got it to look decent.

                                                                         Tom

I stitched mine up a couple weeks ago.  I had to clean and adjust pretty much each bulkhead.  I suggest wiring everything in semi-loose and then tighten afterwards.  I ended up removing a couple bulkheads and removing a 1/16th here and there.

I would second stitching it all up and then taking out one at a time to adjust.