have a 1811 cub and the pto won't stay on .I have replaced the PTO switch and the relay and jumped the seat switch it will run aslong as you hold up the pto switch but as soon as you let go it shuts off. I took apart the relay and it has a 3 prongs the bottom one has constant power and when you turn on the pto there is power to the outside plug then if you jump it across the top 2 the pto will run any ideas would be greatly appreciated