Sorry dude ANY prop would have been eaten alive with your lack of maintenance. I have NO CLUE where you get the idea that a zinc should last a one year service interval as the interval is 100% dependent upon where you store your boat and how fast your local conditions eat them. I have seen zincs gone in 45 days and some last 7-8 months but it all depends upon where you are and how hot your marina is. This is NOT Gori's problem..
Gori should sue you especially if your are this clueless about maintaining your own vessel and then trying to blame the manufacturer for your own lack of maintenance.
No sympathy from me. One year...? Really? I agree with Gori even though I am not a big fan of their props. CHANGE YOUR ZINCS MORE REGULARLY OR FIND A NEW LOCATION!!!