It was only by process of elimination and substitution that I discovered that the Rx was the culprit, as I would have control one moment and not the next. I guess I really can't complain as though it has never been in a crash that particular Rx has given more than 12 years of yeoman service and just goes to show that one can't be too careful as I always do periodic maintenance checks on all my models. Anyway I'm glad it did not cost me the model.

Karol