I've been banging my head on the wall with Geocaching Math but was finally able to crack the code during lunch time today. Got a big green "SUCCESS!" via the geochecker which made my afternoon. This is one of the elusive caches only found by a handful of people. Know the trick is to get it moved from the "to find" to the "found" pile.
I also attended a great caching event Paperless Geocaching IV - 50+ caches in one day this past Saturday and learned a lot about how to make it happen. Now to try and figure out where / when to attempt a 50+ day.