Folks, there's been some somewhat unpleasant and personal comments on this thread, going beyond normal reasonable banter.
I've deleted or amended the main part of it - please nobody be offended by this, it's simply housekeeping to keep PPrune the friendly place it should be. Please keep posting, since this thread started with a fair question and has contained some useful advice.
But, on topic, and no personal attacks in public places. "Editors decision is final, and no correspondence will be entered into".
Genghis
Admin.