thanks for the answer joe, just learning the ropes myself. I am curious as to the answer of what size you should be up to also now because after thinking on this a bit I am wondering if my measurements were a tad off. Manufacturers use off the shelf parts and steel balls come in fractional equivalents of 1/64th. 7/64 = .109, 1/8 = .125, and 9/64th = .140. In metric a .3 mm ball would be .118 and a .4 would be .160 inches and I really hope my measurement was not that far off.