I never understood why people have opinions on the mix ratio of a product that it formulated to be mixed at a certain ratio by the manufacturer. The chemists at Amsoil didn't just pick 50:1 out of the air. When guys say stuff like, one ratio is too lean, one ratio is too rich, I don't understand how you come up with that. Lean and rich air/fuel conditions are adjusted by jets, you adjust(re-jet) your air/fuel ratio to accommodate the manufacturer's recommended fuel/oil ratio. Now if the oil manufacture doesn't have a recommended mix ratio, then we can have a conversation about the appropriate mix ratio. Years ago you would have a hard time finding any info about the oil manufacturer's recommended mix ratio information, but now you see more and more oil companies putting their recommended ratios on their oil bottles. Looking at it from a business standpoint, the oil companies would rather see you mixed at 32:1 versus 50:1 because you need to buy more oil at the 32:1 ratio. Klotz Super Techniplate for example, tells you to mix at 20 to 32:1 for air cooled motors,and 32 to 50:1 for water cooled motors. FYI Klotz SuperTech is a blended oil, its not fully synthetic.
Here's where I think the confusion started. Years ago, as little as only 10 years ago or so, the majority of oils were petroleum based oils. Guys and companies like Yamaha and Honda would use/recommend mix ratio's of 20:1 or the old standby of 32:1. They did this for two big reasons that I know of, one is the idea that the extra oil is needed because of the lower protection offered by the older, lower tech, 100% petroleum based oils. The second reason is because years ago cast pistons and iron bores were used, so you wanted more oil in the combustion chamber to protect these two parts and help seal 'loose tolerances'. But hell, its 2012... with Nikasil liners and a fancy forged piston, tolerances are closer today than they ever have been so you don't need that heavy coat of oil.
TLDR; Someone tell your mix ratio that the year is 2012 not 1986.