In all your saws or just the older ones? 32:1 newer saws should be ok with 50:1. I can see with more lubercation longer lasting saws tho. Doing this on phone so I hope this comes through! Can't see the fonts!
I have a fairly new MS290 and use 32:1 with Klotz Super Techniplate. I've seen too many of the newer saws that run leaner and burn the pistons. I prefer to be safer rather than to be tearing down my saws all the time.
