Err...you've gone from offering crazy good odds to below-average ones? If you want to try to tweak payouts to avoid pile-ons, do something like what swole does. Don't just knock .1 or .2 off one team's payout while keeping the other the same.
Just in case noone has told ya.......if you go into the negative from booking or betting they could ban you from the bookie forum. So if you enjoy the forum and want to continue to bet/book then I would try to avoid that.
What would be nice, if if there was a way to sell Karma back, for like a fraction of what we pay for it. That way you guys could make some cash. But I guess that would be gambling, and he'd prob need licences and shit.