RE: GO .25 Breakin in (heat cycle) F-UP!
Watching part 3 it sounds much healthier. Whats your LSN at? With all the fiddling you might have the LSN too rich/lean compared with the Idle. I would reset the idle to 1.0mm. and have the LSN either flush or just inside flush.
When starting the car for the first time or after its been left for 10+ minutes you need to blow into the fuel pipe that connects from your exhaust into your tank, take it off the exhaust and blow into it to make sure theres fuel in the carb ready to start.