Ian,
I found a post from 2012 only yesterday and am hoping you can help me. I am recreating Tunbridge Wells West in N and have a need for 4 platform supports. Like you I have attempted to make them but they are too small, for my skills. It is not for a platform but a coaling stage made up of 4 supports on stilts. I have a picture but not sure how to get it to you using this route. If you have any spare supports that I could buy or if you have a way of getting more made please advise.
Best regards and apologies for hijacking this thread.
Bernie Oliver