Definitely getting spark. Pulled one out, forgot to ground, and zapped myself.
Kill switch is fine. I've tried all different combinations of pumping the throttle lever and trying to start at different positions--nothing.
I took off the flame arrestor and noticed black "gunk" under the butterflies at the "floor" of the carb, with what look like little particles in them. I'm getting close to pulling the carb and cleaning it.