My Park wear gauge says its time for a new sync chain (.75), this will be the 1st change of the timing chain. I think I know what I want to do, but I'm fishing for opinions. The existing timing chain is an 8 speed chain while the main drive chain is a 9 speed. I'm thinking of replacing the timing chain with the same 9 speed chain as the drive chain so that speed links, spare links, etc. are the same (I'm thinking emergency roadside repair). The other thing I assume I have to do is buy 2 chains and cannibalize one for the extra length of the sync chain, right? I've heard about swapping the sync chain rings (front to back) to even the wear, but I'm not sure if I remember that correctly.