i'm making a hybrid with Klipper Graphite on the mains, and original syn. gut on the crosses. klipper graphite is a stiffer, less resilient string than original syn. gut, so in order to get the feel of both strings- which ones tension needs to be higher? does the stiffer string need to be tighter than the softer string? or does the softer string need to be tighter than the stiffer string?