Do a little search and you'll find a lot of people(including me) have had to modify the z bar to get enough travel to fully disengage the clutch and engage it. I removed the z bar gut the lower arm and added 1/2 inch to it to make it longer. I tried a longer actuating rod but it either fully disengaged the clutch or fully allowed the clutch to engage but not both. Oh yeah I'm runnung a centerforce too.