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I seen a video once but it was with msd distributors. but basicaly they put yellow grease on the distributor gear, installed the distributor. made two revolutions of the crankshaft by hand and removed the distributor. if the depth is correct the grease will show that the gears mesh in the middle of the distributor gear. There has to be videos on this & I would call mallory tech department and ask them about this. A chewed up distributor gear can cause a lot of head aches.