I have been playing with gearing on the ZR 900 and would like to try a couple of combo's that dont work with even number chains......24/40...stock 74 link chain doesnt fit and the 76 link chain has too much curve to run efficient.....The same thing applies to 21/39 the 72 link wont fit. Can a guy make a 73 link chain or a 75 linker?? I was told that once you start messing with chains you run the risk of breaking it under load.......that would be a big mess and not a cheap repair I imagine. Does anyone have experience or info. Thanx in advance..