There is an informative thread about the Thunder Tiger Pro 40, cleaning it, and backplate mounts at [link=http://www.rcpro.org/net/ThreadView.aspx?threadid=504]424 New Engine Preparation[/link]. It was written by Ed Smith who has a lot of experience with racing engines.

If you are pulling the thrust washer off of a used TT Pro 40 and have any trouble, see my video at [link=http://www.youtube.com/watch?v=nUGrG9MVbo4]Pulling a Thrust Washer[/link]. I don't sell anything anymore.

I've got to change the bearing in a TT Pro 40 and will probably do a video.