Blueprint a Top LoaderAccording to Marvin McAfee, you can blueprint your four-speed. Blueprinting is a fancy word for sweating the details. It's the tiny imperfections that can bite you. High spots and score marks in an input shaft will cause clutch disc hang up. Ditto for the clutch hub, which can have the same kind of flaws. Never install anything right out of the box because new doesn't mean flawless. Marvin has dressed the input shaft splines as well as output splines for smooth operation. He also dressed the McLeod clutch hub. His crowning touch is the use of a real clutch pilot bearing, not a bushing. A clutch pilot bearing will yield smoother, more reliable clutch operation, even on a stocker.