I have a Woods 1260 10 foot rotary mower. The 1260 is built heavy. The 1260 has two blades. Recently I had to re - time the blades as they would hit each other. Took a while to figure out. I did call Woods and they said the PTO shafts powering the left and right gear boxes have a bonded rubber insert. The service tech said the rubber had probably lost its bond with the metal and would slip under heavy load. I really don't know why these bonded rubber things are there unless it is to reduce vibration and take up some driveline shock. Just wondered if anyone ever had the same problem with the bonded rubber slipping? Is there a cheap fix like drilling a hole through the assembly and and bolting it together so it can't slip. Or, possibly welding the thing together. Woods now has an undated shaft (pictured) from the center gear box to the left and right. Cost is short of $500 each plus shipping from Woods. I see there are some aftermarket shafts priced around $200 each which wouldn't be too bad. Old shafts had two universal joints with the bonded rubber thing. Updated shafts just use bolted together rubber disks as pictured. Appreciate any ideas.