trying to find out if there is a way to stop the game from forcing me to use my combination runes when i carry the normal 2 types just to keep from wasting the combo runes. the only thing i can come up with is to drop the stacks of combo runes over to avoid using them. this even happens when its not just 1 combination rune ie: using up mist and lava for bones to peaches when i'm holding earth and water runes.
i dont think you understood the question its more having for example both types and it using the combination runes i'm aware of the cost of runes and bag space but some monsters do drop both normal and combination runes. the best i've managed to come up with is to sub out a combo staff for the normal rune that doesnt drop