As i said , 32:1 is not requied today . When it was recommended it was because straight 30 mineral oils were being used . Even then saws carboned up since it was a excessively rich mix ratio . It Also it easy dropped out of suspension easily in storage or did not mix oroperly i cold weather
My Pioneers have full Torrington bearings , likely better than what is in new saws today . Timkin is the same bearing today. Only 2T units that I have had experience with that had Babbitt bearing other wise known as bushing were OMC. 2T Lawnboy mowers . They required religious use of only OMC 2 stroke oil at 16 :1 in the 60 's then 32:1 in the late 70's to mid 80's . The Babbitt bearings & loose tolerances required heavier viscocities accordingly .
Newer lawnboys have a silver over babbitt bear that has needles riding on it for the big end rod bearing. The old ones from what I gather had bronze bushings. On the PTO end of the crank. I am not sure if older saws have these types of bearings or not.
Back in the day saws carboned up with 30wt auto oil not from the ratio, but rather because it was a poor two cycle lubricant. Modern oils will work very well at 32:1 and even lower. And 32:1 isn't excessively rich. It's actually middle of the road. Yamaha to this day recommends 30:1 in there mx bikes and for good reason. Suzuki, Honda, and Kaw all recommended 32:1 when they still made two strokes.
The OPEmfgs went to 50:1 to reduce visible smoke emmissions given the average joe can't tune a carb to save his life.
Modern saws run great at 32:1. My 400C has ran 32:1 since day one and is very clean internally and doesn't smoke at all except for a few seconds when cold.
Previously I ran a Husky 562 at 32:1 for years with good results. Even bumped it up to 24:1 when I needed to run a long bar in large oak. Again with perfect results.