[fishski]

I worked at a bicycle shop while in college and do my own work when needed and I agree with call comments. Leave enough space for the ball bearing to be able to move around. If it's minus 1 then so be it. Use good grease and check for pitting on the race on the hub and the cone fitting that holds the ball bearings in place. I too have bicycles from the 80's/90's still in great shape. Good luck.