Hi There,
Been there doing that, a big +1 on the stabil gas treatment, and also do not skimp on the quality of the gas cans, stay far away from the new ventless style gas cans, more trouble that they are worth. the best can for the money is used nato cans
http://www.sportsmansguide.com/cb/cb.asp?a=201701
buy a NATO Gas Nozzle to go with them.
I have 5 and I rotate the gas from one can every 3 months
hope this helps