Just an update on my non starting issues. I replaced the coil with MMI one and got great spark to the block! But still no engine start
. Back to the Don Moyer unexpected shutdown sermon.
I decided it must be a fuel issue, which is like step #10, but lucky for me I noticed a bit of advice from DM in the video which solved the problem. I left the carb in place and removed the drain screw to let out all the fuel, (which was indeed a full shot glass). I then engaged the fuel pump without the engine on and basically backwashed the main jet with fuel. The picture shows what came out.
Boom! We have ignition! She runs nicely now, but now my questions about the carburetor remain, given the dirty status.