It has been suggested that I run 5% nitro fuel thru my MDS engines. My hobby shop does not carry 5%, but they can order a case for me. All I need is a gallon or less to see if it solves my problems. My question is, is it easy to make my own fuel or can I use my 10% fuel and mix it somehow to get 5%. Please give full details, I don't know much at all about fuels.