Great report Killy, turned out to be a bit of an epic voyage due to that weather. Real shame, and I hope you do come back and get the views you deserved. I think this year has been exceptionally wet all over Britain due to the jet stream being too far South. It's really not always that bad, even in Scotland.
I was in the Fort William area around the same time you were in the Cairngorms and got soaked for four straight days. Lost my 'mojo' after the fourth day so called it a day and drove back to Bristol early.