i am ordering a pair of ball bits for enclosed tracks from sfs carbide. for 9/32 spears ,(7.1mm) the bits will be oversized .020" so they will be 7.5mm diameter ball. with a taper to 3/16" so the tracks wont have to be 1/4" open on top. they will be 3/16" open tracks, (perfect.) i have to buy 2 to get them custom made. so i heard they are 65$ each is anyone interested, i will split the price plus shipping?