Hey Gents. So A few weeks ago I purchased my first Leica, a beautiful M4-P. However I've just noticed that the viewfinder isn't as clear and contrasty as my friend's M6. I did a search on google and found a post on a forum that states that the top plate can be removed and the viewfinder optics can be polished to remove the "fog". However, another google search did not provide any results about how to de-assemble the top plate. Now can anyone direct me to a site that details how to remove the top plate and the veiwfinder? I'm well aware that I could send it to get CLA'ed. But I would like to try this on my own first. Thanks In Advance!