Hi, just bought my first saw (although used them in the past with more experienced mates) and have been reading stuff avidly for the last few days. The saw's a Husky 142 (I know, almost a toy!) but my question is why do they state using a 40:1 mix and almost everywhere else I look 50:1 seems standard practice? Would using the leaner mix hurt the Husky (not that I intend to). It just seems wierd that Husqvarna bucks (ha!) the trend...