I just purchased a Homelite 750 and was wondering if the 50:1 Stihl mix I use for my other newer saws is o.k. Also, how do you remove the clutch to change the drive rim? Do I need a special Homelite tool? I understand the Homelite fanatics a little better now. I have only started the saw once (haven't cut anything yet) and I already like it better than my 084.