Had to give my props and a big shout out to southbend clutch customer service. Had a dual disk installed jun-Jul of 2013. Sept I started with full clutch feel, but no disengagement. They walked me thru some adjustments, re routed my hydraulic line, problem solved. Then Nov started getting a overly stiff clutch at random times almost felt like stepping on a chunk of rubber. It would do that for 1-3 clutch depresses, then go back to being smooth as silk for a while. Called up customer service finally and not only did he walk me thru a couple tests, sent out a new hydraulic set. If anyone is debating between the different clutch manufacturers, I suggest south bend