I store mine wet. At each fill of my 2-gal gas can, I add the proper concentration of fuel stabilizer and 2.56 oz of 2-stroke oil (Echo Power Blend, because I have it) for a 100:1 ratio of fuelil.
When I fixed a stuck intake valve on a friend's mower engine, I read about the lubricity offered by a very slight amount of 2-stroke oil in with the fuel. At such small quantities, there are no negative side effects (like carbon loading in the combustion chamber), and I've read that it helps keep stuff from gumming up. I've been doing it for two seasons now (spiking my 4-stroke fuel with 2-stroke oil) and everything continues to run well.
I used to have problems trying to run stuff dry. You never get ALL of the old fuel out, so whatever is there ends up crusting up or going bad anyway, at least in my experience. I've found that storing completely full/topped off reduces the formation of condensation and reduces problems in the spring.
When I fixed a stuck intake valve on a friend's mower engine, I read about the lubricity offered by a very slight amount of 2-stroke oil in with the fuel. At such small quantities, there are no negative side effects (like carbon loading in the combustion chamber), and I've read that it helps keep stuff from gumming up. I've been doing it for two seasons now (spiking my 4-stroke fuel with 2-stroke oil) and everything continues to run well.
I used to have problems trying to run stuff dry. You never get ALL of the old fuel out, so whatever is there ends up crusting up or going bad anyway, at least in my experience. I've found that storing completely full/topped off reduces the formation of condensation and reduces problems in the spring.