Just my 2 cents, but I think the original design of the ball is too small. I think it should be the size of a pea (twice the normal size). Better for me functionally and less likely to have dirt, chips,beer etc. to gunk it up. Like they say the same speck of dirt on 35 mm is 4 times the size on 16 mm.
Peter McAuley
AXYZ
Toronto