Thank you Ernie for your very nice comments, I really appreciate all the words you leave.
The tail plane on this model is only very thin hence pretty weak, I attempted to rig the tail using my usual 0.12mm mono but even with great care it applied too much pressure causing the tail to deform. I ordered some ModelKasten 0.13mm stretch rigging from Hobby Link Japan, this product has a round section and is a bit stiffer than the usual elastic thread, this will make it easier to thread the line through the brass tube that I use. My order was posted a week ago so I should have it soon, but I still have plenty to do while I am waiting.
I have made the two ailerons which fit between the upper and lower wings, they mount in the centre on the wing struts, quite an unusual set-up but very effective.
Des.