Thanks Mark. Hope to get it running today. I like those four tooth dogs, paint them Homelite red and they will look like flames on an old hot rod. Just kidding! If I get it running I'll do a drag race with one of my Homelite Super 1050's. Being only 1CC apart it should be a pretty even race. I've never compared one of the 1050's with my Stihl 660, but I don't think I notice that much difference milling with the two. But, you get the feeling the 660 is faster because it revs so much higher. When I start to push the limit of the 36" bars on both saws, I think the Homelite starts to pull ahead of the Stihl with the extra torque. I'm hoping the 550 hangs right with the 1050, Joe.