RE: stopping engine w/ piston at bdc?
Thanks for the answer and for your patience.
I bought myself the "Ultimate Nitro Engine Guide" book from Radio Control Nitro magazine. It's a very well written book and I'd recommend it to any newbie. Unfortunately, after they tell you to make sure that your piston is at BDC they don't explain how to to do it. So I thought it would be good to ask those in the know.
Thanks again.