Help setting valves on a 225

Have to agree with Dan here. Setting them while running goes soooo much quicker than stopping to rotate my engine from point to point.

About the heat from the engine making a difference, I manage a machine shop and the temperature of the metal definitely does make a difference. We don't do aerospace work or anything close but have a controlled temperature just for that fact. The metal can expand and contract significantly during hot and cold cycles.

Another good point in adjusting it while running is that you can actually hear the changes that you make. The "clicking" goes away when you get it right and if you go too far , it starts to stumble and the idle changes.

And the mess is not a big oil washout and most times nothing to speak of.

Just my opinion guys.