Please keep us posted, and good luck on the project. I don't get how there could be no contact on the pins.... it is purely mechanical at that level.
All your options are open with that later motherboard.... you can use the older and the newer approved processors.
I'm thinking it will be the second processor being bad, and that you'll be able to send it back or just contact the vendor and get a good replacement. For others.... there are some great deals on used processors from eBay vendors from Hong Kong/China (same thing for this purpose). However, for processors I only buy eBay used from USA vendors with very good ratings. Over the years I've only had 2-3 bad processors out of over 100 (getting close to 150, probably) and always have got a functional replacement from a good vendor (usually on the honors system, with no request to send back the original).
