my 1974 datsun 260z : the clutch is real hard to get in and i have to turn the car off to get in reverse. another thing is that when it is in a gear and im stoped it wants to shut off but if i relase the brake with it in gear it starts rolling with the clutch all the way to the floor just like its in gear so is there a adjustment i could make to fix this any help would be great thanks