I'm with you With racing motorcycles and building them for decades and most having taper fit ignition flywheels using ANYTHING on the taper other than a perfectly clean, grease, oil, etc., free fitment would be a sure chance of failure. There are tens of thousands, make that billions, of ball joint tapers that are fit/installed without anything but a clean, grease and oil free surface for a reason. Get the right tool(s) such as a puller, fork, etc., or the best a BFH and leave the taper clean, it's the way it's supposed to work.