I have acquired one Mark Fitch blank (PHY Martha Marie taper) one Mark Fitch completed rod (PHY Perfection taper) and a rod finished by someone else on a Fitch proprietary taper, Purist? I believe is the name he used, and every one is a great rod. The rod builder goes by the ebay name of fitchm57 and often has blanks for sale.
This is one under rated and almost unknown blank maker. I have seen his rods for sale by other rod builders, Ron Barch had one at a fly fishing show in Ontario a couple of years ago.
There are a number of great builders out there, check this site.........
http://clarksclassicflyrodforum.yuku.com/directory
........spend some time there and ask all of the questions you want, you may even find a local builder with a great reputation!