Great articles, I think I'll experiment tomorrow, maybe cut a couple more open to see the differences in springs and pistons. I'll let you know what I find.
One of the things I've been concerned with is hooking up the vent tube from the passenger side valve cover to an aftermarket air cleaner, vice using a straight breather. The stock valve cover hole is too small to use a breather with evac tube to air cleaner. The breather would provide me a filter to keep debris out of the air cleaner (like the air cleaner vent filter does on stock air cleaners). Since I don't have a filter, I haven't wanted to run a direct tube into the air cleaner since if any debris entered, it would go directly into the carb. From what I read, this looks highly unlikely since it should be sucking air from the air cleaner vice blowing air into it. So a homemade filter out of a 2 piece fuel filter, with the fuel filter element removed and replaced with some copper pot scrubber material, should provide the protection needed to ensure no damage to the carb. Still not convinced, but getting closer.