Briggs Quantum hot start problems

I have a snapper lawn mower with a 675 series quantum with ready start. The engine as of late has been hard to start especially when hot. When intentionally stopping the engine to empty the bag, it would take between 8 to 20 pulls to refire the engine. Could this be a dirty carb , ready start malfunction or both. Any help would be appreciated.

Engine
Briggs and Stratton Quantum 675
Code 126T05-0678-B3
Serial 08032756