WARNING TO THE UNINITIATED
I am getting back to my Zwarte Zee kit from Billings after a few years waiting for other projects to run their course. Previously I had installed the keel strengthener and three bulkhead frames into the hull. Recently taking it out of the box again I found that all three frames as well as the keel strengthener had detached from the plastic hull. I was able to simply pull these pieces out of the hull completely. I had not washed the hull before gluing the parts in. (See the photo attached).
So the warning is, when the instructions say clean the cast parts (in this case the hull) with warm soapy water, they really mean it and if you don't want your model to disintegrate in the future, DO IT PROPERLY. Luckily for me there is no damage, except to my ego!
Any builds out there I can study? Cheers and happy sailing. Brian