i recommend going to the extreme when cleaning carbs.. Anything you do to save time or effort or expense when cleaning a carb will probably result in a waste of time and effort and expense..
Spraying carb cleaner might loosen some crap and push it deeper into the passage.. Compressed air is no guarantee but it's the best, short of a pressure washer.. a cheaper version of which you can buy for a few dollars in the autoparts or tool store. It's an air-blow gun that has a hose for siphoning solvent.. i think they art called Engine Cleaning Guns or similar. Blast the passages with solvent at 110 psi..
Get it clean whatever it takes.
The rest of the system is just as important as the carburetor. Hidden screens.. internally corroded rubber fuel lines .. look closely and examine the entire fuel pathway.