I understand your predicament, but you'd be farther ahead by just buying a new Saw.
Carbs go bad. Even when they look ok, passages plug, diaphragms get pin-holes, and the Ethanol Fuel bad ju-ju for older fuel components (lines, gaskets, diaphragms, etc.) Anymore, we don't dick with them, we install new and things generally go back to working as designed. Now that said, for lesser expensive machines the question becomes "Is it worth it?"
The cost a little bit more, but Professionals, Govt. and Municipalities are all heavy users of Stihl for a reason.
If you have the hose, and new Carb then clean everything to the best you can, and disassemble it, replace the parts and give it a try....the knuckle heads that do this for a living do so because its easy, not because they're smart.