Harder than normal starting

Hey guys...I have had my Swinger 340 for over 2 years now with no starting issues. It still starts great cold but when it warms up a little and I shut it off...it doesn't start as readily. This little issue just popped up recently. What should I look for? I didn't change a thing. When I put the pedal to the floor it starts pretty good but you can tell from the exhaust that alot of fuel has been dumped into the carb. Any suggestions?

It sounds like you might have a piece of junk on the needle valve which is hanging it open a bit and letting fuel leak into the engine.
When is the last time you changed your fuel filter?