I redownloaded both ringtones from iTunes, 4th time I've done this now and reset one as phone ring. This time I doublechecked both notifications and sounds, both locations, thanks for that suggestion bear. They were both there as previously had been the other times, however this time I clicked both spots again as if to reconfirm and so far they are sticking and working as desired and as they should be. The only different thing I did was to reclick under both notifications and settings. Don't know why this should have helped as they were already seemingly in place, but it seems to.
My fourth download of both tones from iTunes has triggered a response from apple and they now say they want to contact me to see what they issue is. See how that goes.
Thanks J.A. and bear for your comments and suggestions.