Time To Take Stock..... After a week hiatus I revived with new inspirations on how to proceed. The Lower sixth of the cannon assembly vexed me until I realized where my problem lay. It is pretty much what is found wrong with a majority of scratchbuilds; they are too square and straight sided. The lower rail needed some slight curvature to the sides and base. https://i.imgur.com/q3M6lG9.jpg Fortunately the material I am using has a taper for ease of extraction from the mould. https://i.imgur.com/biPfc7S.jpg Playing on that feature I came up with the correct angles to duplicate the artist's rendering. https://i.imgur.com/10kf0vn.jpg This will be more apparent in subsequent images.