IGT S2000 Triple Diamonds 9 Lines,from ticket only to coin, Payout Issue

[bosscleo]

I have a IGT S2000 Triple Diamonds 9 Lines I converted from ticket only to coins. I understand (I think) the split payout using both coin and printer but I just want the machine to payout in coin on the win and not have the player hit cash out. I went the route of disabling the printer and setting the Limits both bill and credit to 40 credits. Anything over 40 credits pays out in coin. However this limits the bills denominations that can be used. Remember the credit limit is 40 which applied to bills also. I made the a .25 cent machine. It will payout in quarter to anything that goes over the credit limit of 40. I would like to figure out away to have the credit limit high for bills but still pay out in coin with wins. I heard this is just the way the machine will work being originally just a ticket machine. Any Ideas