Ditto regarding T.O.M.'s words. I am a corporate instructor by profession and a modeler by passion. In both fields I have learned there is a difference between ignorant and stupid. Ignorance is simply a lack of knowledge. Stupid is a refusal to learn.

I am grateful for T.O.M.'s and Jody's training on this, and other gas engines. I have about a year's experience with gas but with their tutelage, in reality, I have gained much more. (Overall experience in the hobby is over 45 years, but mostly with glow, and rubber many years prior to that.)

One thing I would like to point out is that the phrase "...to agree to disagree" would be well learned and should be applied to most opinions on RCU. I have never seen anything gained by the inflamed emotions evidenced on these threads, but it happens nonetheless. Be thankful for those who share genuine experience for free. Experience is usually the most expensive education you will ever pay for.