Re: What more can I do (please read)
Originally Posted by 2door
Thanks for posting the vid showing how to lap the cylinder head. That is a process that should be done even to a new engine. The only suggestion I could add would be to use a sheet of glass under your sandpaper instead of wood. You'll get a little more precise job.
Also I like to clean the gasket surface before I begin and 'paint' it with a magic marker or if you have it, machinist dye. That way you'll quickly see where there are any imperfections or high and low spots. They'll show up after just a couple of swipes across the paper.
The trick is to not sand in an angle. That means keeping the head square to the sandpaper/glass. I do the cylinder the same as the head. You'd be surprised how often you'll find the cylinder gasket surface not much better than the heads.
I dont always ride WOT, but when I do..I do my best to keep the rubber side down..Ride safely my friends!