Steve
A sort of penny has half dropped. Reading about your CB problems, it suddenly struck me that, if I remember correctly, you collected your kit from Swallow Boats and I arrived to collect mine later that same day? Meaning that our kits were put together at much the same time, over the previous week(s) or so.
I am having major problems with the fit (or rather failure to fit) of a number of parts - 3 pairs of seat supports and possibly also the three temporary spreading bulkheads to which the seat supports are screwed during fitting of the longitudinal bulkheads. I struggled to alter, modify and generally fiddle, but couldn't make anything work, so emailed Matt, who promptly suggested he send replacement parts, which I await (trouble is, Matt is currently jet-setting, or Easyjetting, around boat shows! - see website. My build meanwhile is totally stalled (well, except for things like daggerboard, rudder, spars etc).
Matt is perplexed by my problem, but suggested that 'something moved in the CNC machine perhaps'. I'm wondering whether, if our parts were CNCd at much the same time, we have both been victims of the 'glitch', whatever it was, in your case with parts involved around your CB case? Just a thought. You got round your problems - well done. I didn't around mine, but not for lack of trying, I assure you!
I'll give a progress report when I get and can try the replacement parts. You're clearly making a beautiful job of your Storm15. Judging by what I have seen of the Crosses' 'Iona', she will sail beautifully, and like a witch in light airs.