Dad recently bought a 520vx 225 Opti, going to replace fuel lines just for piece of mind due to poor running. Also going to pull the tanks, drain, and inspect pickup tubes. When we pull the seats what should we be looking for to pull the tanks as far as mounting hardware. Or would siphon the tanks and changing fuel/water sep be good enough? Wanting to do it right, she ll only hit 4200 WOT. Compression test checked out. Any tips, tricks, or hints would be appriciated! Boat rides like a caddy just running like a pinto!