OK, here is one I am ignorant on and would like some help from the knowledge guru's. What is the difference between 1/8" chain/sprocket setups a and 3/32"? I presume one is narrower than the other, does that mean they can not be mixed? Can you mix one way and not the other? I am currently looking at a freewheel that is marked as for 1/8", which is why the questions. Thanks for any enlightenment you guys can supply!