This experience has been an education. I'm discovering that a cracked hydraulic cylinder case is not as uncommon as I first beleived.
This particular case was used on the L2900, L3010, L3410, L3710 and L4310 (WARNING: Owners of these models may begin to experience feelings of paranoia while operating their 3pt, this is normal) and 4 of the 5 salvage yards that I have spoken to that had one or more of these models have told me that the case is either cracked or missing (sold). I've got 2 more yards to check but it's sounding like I'm going to have to pay to ship the one I found in California. (insert big sigh here).