Given that I have accepted my new affliction....
The original bar on my Stihl MS290 was 20". Used a .050 gauge, 3/8 pitch chain.
The newer bar I have for it is also 20" and 3/8 pitch but .063 gauge.
I understand I have to stick to 3/8 pitch because that is what the gear pitch is.
So, what is the difference between the .050 and .063 guages?