I seem to be having the same issue as Mr. Stupid on this Forum. I have a 2024 Maverick HD (Kohler EFI engine) with only 32 hours on it. I baby the machine, keep it immaculate and store it in the garage. I've had the issue since about 5 hours on the machine. It starts fine and will run fine cutting short,dry grass for anywhere from 15 minutes to an hour and then the engine surges as it's going to cutoff or running out of gas, BUT the engine suddenly recovers and I'm able to continue cutting for a while until it does it again. The interval between cutting fine and the engine surging is variable, seems to occur after the engine is hot and been running a while. Now the surging is occurring more often, than the initial occurrence. I have changed the fuel filter and use fresh gas. I add an additive to the fuel. The machine is new. Am I having an electrical issue with a safety switch (seat or brake), do I have a continuing vapor lock issue? HELP !!!