I should have read all the way to the bottom. What might be happening is normally the chain will have 3/8 to 1/2" play when properly adjusted. When you goose it the chain will loosen a bit more. I do know if you tighten these chains without any play the rear axle will wreak havoc with a good shimmy until the slack comes back to the chain. When the chain is tightened to 3/8-1/2" play and you nail the throttle the chain will get a bit more slack in it. If the chain is too loose then you get slippage upon full throttle especially when torqueing the motor when climbing a hill. The fact that you have that torque limiter you may not be letting the chain get the needed slack under the heavy throttle and it might be acting as if the chain is too tight. So you might find it solves your problem when disconnected. Yerfs were bad about breaking the rear of the housing where the adjustor bolts from excessive torque over time. Kinroad and Hammerhead solved that problem by adding a 2 piece stiffener to the back of the case to distribute the stress over a larger case area thus solving the cracking of the case. If you went this route you would have to modify the adjuster to fit around a wider rear case.
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