99 Larson 206LXi 5.0L EFI Alph
99 Larson 206LXi 5.0L EFI Alpha1 I am new to this boat. The block drain plug on the port side turned out to be a brass valve that was very stiff. I can find no reference to this in any manual. Is this unique to Larson? Any advantage to keeping it? Is there a trick...