Thanks guys.
Vallis Alpes is a good test

I've managed to get the central gully down the middle of the Vallis Alpes on the verge of resolution... just haven't quite got it! Just can't quite get the results Mike can get! I'll spend a bit more time on the next reprocessed version... I'll be surprized if I can get that gully to resolve

. I think that's the best result I've had on Vallis Alpes so far anyway!
Al.