It really makes you wonder, at least it does me. your playing with a M c/b. It will not return if you scratch because it it not heavy enough to tip the weight scale. Knowing that, it sounds really stupid to play that way unless the tables are open.
Someone did not do their homework, be it the captains or the room owner. Anytime a player scratches the table has to be opened, by someone, to finish the game. I mean to me that is really a dumb move. The owner should have had open tables and collect green fees. The other option is put in quarters to get your c/b back. The OP did not say if the tables were open or not. It sounds like they were not.
The bb c/b should have been removed by captains or owner before league play started. If someone called a foul on me I'd tell the to shove it where the sun does not shine. I rarely played league because of all the whiny nit picky rules.
I owned a room and I took away the bb c/b's before league and replaced them with red circles. We charged a green fee. Was there a m /cb on every table?
Rod