TB 110 w/ B&S 550ex 140cc only starts with carb cleaner then dies.

I will start off by saying I know nearly nothing about engines.

Here is exactly what I did:

Bought this lawnmower in june2016
Stored it away in November with gas in it, no fuel stabilizer
Tried to start up a week ago, nothing
Bought some gumout choke&carb cleaner
Removed the airfilter, sprayed in some GumOut, 4th pull it started and died instantly.
removed the gas tank and dumped the gas out, put it back together, added fresh gas, reapplied gumout, 4th pull it started and died instantly.
Pulled off the gas tank, reapplied gumout, 4th pull it started and died instantly.
pulled off the carb, opened up the bottom, dumped the gas in the bulb, sprayed the gumout in the bulb and pretty much anywhere I could get it, reassembled, added a little more gumout for good measure, 4th pull it started and died instantly.
removed the carb again to confirm that new gas was in the bulb, reassembled, reapplied gumout, 4th pull it started and died instantly.

I have not touched the sparkplug, I don't have the tools to remove it or make sure the gap is correct, but since it's only a year old and can at least start I assume the spark is fine?

I don't know what to do, I might just buy a new carb (it's 37 dollars on amazon), I'm not comfortable taking the whole carb apart to fix it.

Thanks for your time.

TB 110 w/ B&S 550ex 140cc only starts with carb cleaner then dies.