After tilling the garden I tried to stop the PTO but tiller kept turning. Tried the PTO switch several times but no luck. Shut tractor off and switched lever to mid PTO, started back up, now the rear PTO stopped but the mid PTO is running with PTO switch off. With the switch on the tractor does shutdown if I get off the seat. Took panel apart and checked switch with meter and checks good.
Any ideas on what to check next