Ok, I have one piece of advise when tackling this job. I wish I would have done this because it probably would have kept me from having to tear the bike down AGAIN to fix and oil leak. Take it for what it is worth. Do it or not, your choice BUT.......hind sight being what it is.........when installing the valve cover gaskets, I HIGHLY RECCOMEND taking some high temp gasket maker and putting a bead in the entire groove of the valve cover and also in the half round shape on each side of the head itself then install the gasket onto the valve cover making sure it is in the groove. Then put a coat on the bottom of the gasket. The silicone will hold it in place on the cover and add sealing once cover is in place and tightened down. I did do the half round first time around and installed the gasket on the head then tried to seat the valve cover. What a pain in the keester. I ended up pinching the gasket on the front cover at the back. I did not see it.....in a really bad spot. Plus I am half blind.......and dumb. Ended up with Niagra Falls coming out of the back of the cover. If I had to do this over, I would do as I mentioned. I had to tear this whole thing down and cleaned everything up and this is what I did. SEAMS to have worked. Looks like it is seated well all the way around. But then again.....I thought it was the first time I did this. But I am confident that I have it seated correctly this time. Also, if everything is seated and lined up correctly the flanged valve cover bolt SHOULD go in almost all the way freely by hand. Any binding in the screws, check the gasket, something may have popped out. If I would have followed my own advise the first time, installing the gaskets and covers would have taken ALOT less time. Just my .02