Have cleaned out the gas tank, replaced the gas filter, blew out the lines, replaced the pto clutch (the recommended solution from the local John Deere dealer who is so backed up I can't wait 4 weeks), replaced the oil, lubed everything, and still have the same problem. It seems like it isn't getting a consistent flow of gas... The John Deere dealer suggested replacing the pto clutch, which has improved the start up, but didn't solve the actual problem. Has anyone else solved a problem like this?