Anyone have a suggestion for a replacement chain for my 2003 WR450f?? I run sandy trails, and street ride. I was looking at the DID Standard chain, and the DID X-ring chain. Is the X-ring really worth twice the price of a standard? Also, how many links do I need for a stock replacement chain using stock gearing on my WR450f? My bike is at the cabin and I want to order the chain today, so I can't count the # of links. Thanks for your help.