Call a local Moto Guzzi dealer, or if you don't have one call Moto International or MPH Cycles, or even Piaggio directly and have them check the VIN.
If the work was done it should be recorded. I bought a 2000 V11 that didn't have the work done and it was a PITA to get it done, although Pro Italia did it for free, as the warranty is safety related and is still active, at least in the U.S.
Look here to see if yours is subject to either recall, good luck:

