You have to hold your mouth right when you are doing solid rivets and it was a lot easier before I needed glasses, than it was after.
I used solid rivets across my dash board too, still have the butt end of the three A4 rivets in the middle though. Also on the four mounting plates around engine cowl fixtures, but I needed the extra reach jaws in the tool to reach them. There were enough solid rivets supplied to do all that and still had some over, Pity they weren't as generous with the regular A4 rivets.