I'm starting to like Jerry's idea of a stiffer power piston spring. I had trimmed a little off while adjusting the float bowl... maybe I'll add a spacer or stretch it some tomorrow.
Since main jet is only .053", it seems silly to go much bigger than my .08" on the idle restriction.
If the power piston is feeding the idle circuit (along with the main circuit)...? Then I'd expect that central 'valley' in the graph to get wider and hopefully smooth out the initial peak a bit.
