I am so happy today I got my Redmax EB7001 and it is so powerful. At first I was looking at the 4401 but then my dealer let me do a demo of that Vs. the EB7001. There was no contest so I got the EB7001. I was just wondering one thing. It is a 40:1 mix right and how many oz. per gallon would I have to mix to get it. Thank you for any input.