Just curious if anyone had this issue with their rubber rings. The far left adjustable post has small rubber at the bottom and a 7/16 at the top. The smallest one they came in my kit is the 3/16 which the manual says the game uses 16 of...that rubber just flops on the bottom metal post. Are these rubber rings not listed anywhere? Looks like I need to order smaller size. The manual does not even show them only the #7 rubber.