Well done Paul, remember, even slow progress is progress.
I remember that picture of my frame. Good Lord it was a ba$tard to fit!
I think the point with the removeable body is that that's one of the requirements to avoid the dreaded IVA test - that you must be able to remove the body from the chassis in future if necessary. Nobody says you ever actually have to
do that though! The trick is to get your chassis fully sorted before you bond the body onto the frame, then it'll never be an issue. Anyway, carry on with your build as and when you can and keep posting the pictures.