Back again
One thing learnt from todays play is that if I import from moi and then copy it to a new mesh I loose the smoothness of the model. I guess that there is information in the file about how one face will blend into another ? In the past I hadn't noticed this and was bringing in much higher density models than I now think I need. In moi I've started to read the instructions - and it is even more fun than before ! (I wonder if that applies to other things...)
Some splodgyness (is that even a word ?) in the gap between the mouse and its buttons I could not remove - but that is for another day