[Organizers] Payout formula when there are 4 muscians?

Hi All, My husband is on this list, while I'm on the caller list... so I am using his sign-in to post this message. Our dance committee is revisiting our payout formula and I'm wondering how other dance organizers work their payouts when the band isn't the typical trio. (For us, a trio is the standard.) When the band is a four - person (or larger) group, do you adjust your guarantee and payout formula? Do you do anything different when the band is a two-person band? Currently, we split everything after expenses evenly across all performers (band and caller), when the band is comprised of two or three members. If the band is a four-person band, we pay our guarantee, and then we split the overage 75% to the band, and 25% to the caller. Our thought in doing this was not to "penalize" the caller for working with a band greater than our standard of trios. I am looking for feedback on our existing payout formula and for an understanding of how other groups operate. I plan to bring any feedback generated from this list to our next dance committee meeting. Thanks! Nancy Turner