Personally, I think Leica should step up and repair/replace the unit on their dime. They know they have a DOA problem, and should own it.

"I told them they were NIB through the original buyer to me . . ." However, it does not sound to me like the rangefinder is NIB, but rather, an unopened box was purchased second hand. (if I am understanding the purchase history correctly). Leica can't control what happens to the unit after the original purchase, and so is reluctant to warranty the unit.

I bought a used pair of 8.5x42 EL Swarovski binos on ebay. A few years later, a new pup chewed up the rubber exterior. I sent them into Swaro telling them the binos were bought used, and the puppy chewing them was my fault, but to please fix them and send me the bill. Swaro repaired and did a complete refurbishment at no charge. Swaro gained a customer for life for that. Leica shouldn't be so short sighted, especially at the prices they charge.

JMHO