Please try to assemble a YouTube video of some of the action. Sounds like this needs documentation.
This is a horrible video, and I don’t bother with chipping that much of the tree. I’d simply knock the top half out, flipping it aside, then buzz the bottom off at ground level.
And I have to say, I’m a hell of a lot smoother at it than this guy.
http://www.wagway.com/graphics/Model_1000.mpg
I’ve been meaning to have someone take a clip of it in action, for just such an occasion as this.