I have a 2000 yz 125 and the stock tread 100/90-19 and I know michelin run different and the yamaha shop said a 110/80-19 is what it needs, but I can not find it anywhere.The closest I can find is 120/80-19.Would it be to big of a difference or will it work?I seriously am wanting to try out the s-12's or m-12's. :)