Strangely enough, Andrew, the tunnels on the Models by Design hull look very similar to those of the boat going down the slip in one of your photos..so they not to far out...........all things look different taken from different angles.....and a man with the skills that you seem to posess, having on numerous occasions told me about my boats, can easily fix that simple discrepancy with a few brass pins and some filler.
And if it wasn't for us people bringing our innaccurate hulls to the public....there's be very few, if any models of old classic lifeboats built...........that's why, until I released the Watson 41' boat with all it's inaccuracies.....there was a choice of errrr.......yes, the Aerokits Solent.................and errr the Aerokit's Solent, and errr........... and even that had inaccuracies in the tunnel area, and no one has ever complained about that one..........as it brought classic lifeboats to the "mass" public as far as kit building was concerned.
It's alright for rivet counters to be so,( I don't mind rivet counters one bit..so long as their comments about my boats don't offend.......after all they are MY boats after all) and to condemn everything, thinking that they can do better, is also fair enough, but they still tend to use available materials to "better" their own builds...........
One sees it in kit bashers all the time, and I always say.............if you can do better, then show us.
Good luck with the build, with the "sub standard and inaccurate hull" , and I hope you can rectify it to your own satisfaction.....because if you end up being satisfied, then that's the main thing, and what does it matter what others think, if in the end, you are satisfied..........
But it's a real shame that within the first few posts of you starting your build blog, you are pointing out the inaccuracies and poor design of a named model boat kit and hull supplier and the hull that was once supplied to someone who might have thought it the bee's knee's
Enjoy your build, for what it is and should be....... a joy to do for your own pleasure, and bringing some good info and knowledge to others less fortunate than you are, and the connections you have, namely your association with Chatham Lifeboat Collection.