I can't remember if the cutter is from Micro Mark or I found it on the Dremel display at Lowe's. I've had mine awhile too, but now, it's getting some real use.

No convincing necessary. I am definitely going to get a Bowman ring too. I like to go through a progression of steps with these engines (this is my third), rather than do everything at once and then wonder what the actual results, of the given changes were. I guess for me, its not so much just the destination, but also the journey getting there. I know, I know, some results are contingent on several factors and I take that into consideration. Some things I learned on this engine compels me to re-visit a past engine.

If I can get close to 7400 or somewhere north of that with all the improvements and a 18 x 8. I will deem the project a success.