I've found the preload on the stock fork/frame bearings sloppy loose on 5 of the 11 Triumph Cruisers I've owned since 2008. I set the preload with the tank off with a mag base dial indicator atop the spine setup 90 degrees to the top tree plate. With the front elevated pushing the forks from front to back registers actual runout. Zero runout as book recommends is too tight, .001" + - 00025" total read is as close to right as I've found. I set up the aftermarket bearings the same way.
