Tobias,
Thank you very much!

Bryan,
They crew only realised when it was too late!
Fact is that it was a poor design, as it could not defeat the trenches it was supposed to overcome!
Thank you very much for the compliments, much appreciated! I think I have done a good job with it, though I now see lots of thinks that I could improve.
Brett,
Thank you so much for your kind words, I am glad you like it.