Nigel, now all of the unintentional damage is fixed including the missing alignment of the wing. I stuck it in a jig last night, luckily I took it out the jig before mucking about with it and miraculously the wings stayed aligned.
I made a track marker because I wanted to show the plane's journey into the bank, plus I think it would have left some marks on the ground anyway. There are three points of contact on the ground (excluding the wing tip hitting it). The track marks from a biplane would be very different to those of a three wheeler like a Morgan because the tail skid would work it's way outside of the wheel tracks on a turn (and it would do a turn if it lost a wheel). I cannot have two goes at this, from experience when you mess around with painted insulation foam any marks you put in it for the first time remain there forever. If you go over the same thing twice the skin that has been created on the foam by painting it can break off in chunks. Hence I made this highly sophisticated aperatus, as you can see every expense has been spared in its making. It did it's job, if it didn't I would probably have to make another diorama base.
Thanks for looking in, Alan.
Edit: Ironically only half the track marks of the tail skid can be seen on the photo but I promise you they are there.