Colin M
Western Thunderer
Will have to try the diagonals idea Jim.
Photo's of how I approached the diagonal stiffening dilema, post board design, here on my Kings Lynn thread, (post 63). Simple to install and instantly stops all the twist, without reducing flexibility of choice for locating point motors etc. (I always try to determine where any point motors will need to be located before fixing any bracing.)
http://www.westernthunder.co.uk/ind...n-stabling-point-1980s.1773/page-4#post-58508
Colin