Ive been reading alot of the older posts and have found that alot of you run more oil in your gas. My manual says 50:1. From what Ive been reading on the posts it should be more oil. What ratio do you recomend? Also should I switch to Amsoil 2 stroke mix now or later after the saw is broken in. (How many tanks should I go through to consider it broken in?) Thanks for any help.