Stalling

I had a similar problem years ago. Couldn't figure it out so I just kind of went through everything. Finally I removed the line at the tank and removed the other end of it at the fuel pump and blew a bunch of air through it to see if there was a blockage. Nothing came out other than some gas but when I hooked it back up, it never stalled again. No clue what the cause of the problem was or if it was just a coincidence that it worked after doing that.

My money is on a bad fuel pump. They seem to go bad when not used for any period of time. They're also one step above hot garbage these days so they come out of the box broken all the time. Maybe you can run it at home until it stalls. Then take the line off the carb and remove the coil wire and crank the engine and see if the pump is working at that moment.