I was finally able to fix the problem (I think) by dropping his idle speed down. Not sure if someone may have messed with it prior to me working on it.
Here's my theory: The idle speed was increased to the point that the high speed solenoid was controlling the carb such that if you touched the throttle trigger, the low speed circuit was not working correctly and the saw would sputter and die.
Hope that made sense. I was by myself and not able to shoot any video of what was happening.
Anyway, by allowing some adjustment, I was able to fix it (I hope).
If this would have been a full M-Tronic controlled carb, I wouldn't have ahd any issue at all as the solenoid would've controlled the entire carb, not just the high end.
Now my question:
Why would Stihl (or anybody) offer a halfway version of electronic carburetion? Wouldn't the cost of manufacture be the same for a ½ M-Tronic as for a full blown M-Tronic?
More pics to come...