I'm eyeing a secondhand 2019 Island Packet 349, and I'm a bit worried about the holding tank. I've heard the older IPs often came with aluminum holding tanks prone to corrosion, and apparently, they're incredibly difficult to access, often buried under the sole. Does anyone know if it has the older-style tank and that repair can easily coast up to $5,000? Just wondering if anyone has direct experience with the tank material or accessibility on this model, or if I'm worrying unnecessarily given it's a more recent build.