Update: It wasn't JUST that "L" shaped connector, but sediments coming from the old tank. As long as the mower sat still it ran great, good flow from the tank etc. But when you bounced around on it, the vibrations would stir up the sediment, trash, rust, etc. and CLOG the fuel going to the carburetor. Result: Fuel Starvation! That's why the engine could barely get back in on 3/4 choke. Now that the problem is solved, the mower will start when hot WITHOUT the choke on, where before it had to be on due to low fuel in carburetor. Also I found out the other day that the IN TANK FUEL SCREEN was MISSING!! No wonder the line got clogged or blocked. We're now using a make-shift tank at present so the yard can be mowed. Just because you get FLOW from the tank doesn't mean you will ALWAYS have the flow at all times.