My Joe Blow's dual pump head came apart completely a month or so ago, also out of warranty (only much more-so). I called and explained my story (the threaded stud that hold's it all together just snapped, sending the slotted cap opposite the lever across the room), and they kindly suggested that I buy a replacement head. I had not been expecting a free replacement, but wanted to give them a chance to offer it just the same, and I completely understand why they can't just shower replacements out to everyone. A BF user (HillRider) was kind enough to offer up an extra Silca head and I've been (very happily) using that since. I like the pump itself, and have had it for quite a while, I was just unfortunately much further outside of the 2 year warranty period than the OP was.

-Jeremy