At the RPM most stovebolts are operated, I doubt if a little extra lifter weight would be a factor, especially considering the fact that most of the snowflakes get a case of the vapors at any speed above what used to be considered a fast idle. I'm aware that most stovebolters don't have machine tools or the skills needed to run them, so a lot of what I dream up isn't practical. It's just an exercise in what's possible, given enough time, energy and skill to think outside the box.
Jerry
