West marine replaced all there Zincs with aluminum. My question is,what zincs are used on factory Suzuki outboards? I know Yamaha used aluminum. I replaced all my zincs on trim tabs and one on Armstrong bracket but the zincs on my Suzuki I just replaced in December 2017 from west marina before they when with all aluminum. Also I bought 7 new zincs Anodes for the motor that go in the eng.head. Are they aluminum?