Surcharge (for CC) and Tip Charge need to work at the same time.

My merchant adds a surcharge for non-cash payments. However, when this feature is turned on they cannot withhold the tip charge on tips. They use the surcharge for non-cash payments, and not the service charge, because the service charge does not provide a Cash and a Credit price on the guest check (something the merchant demands). Nearly every merchant I have on other POS products operate this way, but I cannot do it on Linga. Currently this merchant is eating about $700/mo of tip charge and needs this feature correction as soon as it can be done.