I recently got a new 16 ball CRC spur and 3/32" diff balls, However I think I screwed up and ordered the wrong balls.

I ordered the following:
http://www.amainhobbies.com/product_...-Spur-Gear-72T

http://www.amainhobbies.com/product_...ntial-Balls-12

Could someone direct me to the correct part# for this spur, the balls are too small, they just fall through.

Thanks