Thanks Dave..I hadnt seen the Video of the fateful landing !
Looking at it it appears clear that I released the back pressure too soon ( doh !!) .
Lessons learnt will be 1) to start the approach further out so that I can judge the touch down better ( the model was way past me by the time it was ready to settle and hence difficult to judge accurately) . and 2) Keep the nose up early and keep holding it off for longer !! ( it clearly needs to be well feathered in and cannot take any amount of dump ) . I am pretty certain that I didnt force the model down during the approach ( I never use any down stick during a landing) , it was coming down by itself , so I need to be aware that it needs the nose up earlier and a very long distance of holding off before allowing it to kiss.
Its not going to be a plane that "sticks" when landed on tarmac ( maybe better on grass ) so I will go ahead with lengthening the main legs and shortening the nose leg to try to mitigate bounce ..but will shelve the idea of the lift dumpers for the time being !
Thanks !