Sorry about the title. I'm really not trying to be funny.
I'm rebuilding a 1982 Trek 613. It has a Sugino bottom bracket with caged bearings. Each bearing has 9 balls.
I've heard, and it seems reasonable, that by replacing the caged bearings with 11 loose balls, it will be smoother and will last longer. There is no problem with the existing bearings, and there appears to be very little wear. This is just a routine servicing, but if I can gain any benefit at all by replacing the bearings, I'm all for it.
Also, is the Park Polylube a preferred lubrication for bottom brackets?