[Grady Clay]

Chris,

I suspect there may be some defective parts out there. When the dog rings were originally manufactured, the teeth were machined all in one operation, not one tooth at a time. I think some aftermarket dog ring machining had poor indexing as the teeth were machined.

Take a new sliding sleeve and new dog ring and couple them together. With your thumbs and fingers get them centered and torqued in one direction. All of the dog teeth should contact the sleeve equally around the circle. If you find the contact/clearance varying around the circle, this is the problem.

What happens is the torque should be evenly distributed among all the dogs. If the parts are incorrectly machined the load is on only a few dogs and exceed the strength of the metal. This looks like the cause off your malfunctions.

Best,
Grady