JP
you have a camera and lens that will defy your best efforts for years to come...a little scratch...a little dust....what does this signify in your universe.
So you did not get the deal of the century...did any of us here expect that to be the outcome of this story of desire and pathos?
Take the sucker out and shoot it until you cannot get your eyes to focus...then get a bit of sleep and do it all over.
Read a little about the previous generation of Leica shooters:
http://www.life.com/gallery/41902/image/92940017/never-seen-life-in-vietnam-1965#index/0
Warranty is something you hope to never need...at your purchase price you can kick this around the block and still afford to get it updated. Either you are in for the picture or you are looking for a gold talisman...go for the pics...a 50 Summilux and an M9 are pretty much at the top of the list...unless you want to do the MF S2-P gig. Consider 4 times the money and file size...not a bit better picture .... unless you are doing billboards.
You are being baited to sell off a good deal for a respectable one....do yourself a favor and take a breather....nothing you have shown will show up in your captures. Talk to Sherry Krauter or Don Goldberg about options if your lens needs work.
Six thousand dollars is a lot but Leica lenses last a lifetime. Digital cameras will be commodities but oh do they image well.
Just a few thoughts...
Bob