See what they recommend for your bow. If nothing is recommended then I would go with BCY 450 Plus. I am partial to it. Once made properly it will stay that length (after setting in). I would also change your cable(s). It is up to you on who you get your string/cable(s) from. You should be able to look around and find people who make them and they may be able to make them for you also. Personally I have nothing against certain manufacturers of strings other then I feel the high cost is keeping people from changing them as often as they should be (I feel every year). If you are a do-it-yourselfer then you can make up a jig and do it yourself. You'd be amazed at the mark up on these.