Was bush hogging today ended stalling the tractor out 3 times. Ran blades into mounds of dirt and never broke the shear pin, assuming because it never hit hard. Using plane 1/2 bolts with no head markings, same ones ive used and broke before. That being said how durable are these electric over hydraulic pto clutches? Checked the fluid and it dosnt smell burnt or like clutch material. Whats the odds i hurt somthing