I just bought a Johnson A 1581 serial number , I bought it for $40.00 but it was locked up. I spent a couple of days on her before she broke loose. I have a couple of questions 1. did they have a grease zert on the lower unit? 2. It has a cast alum. gas tank but has a old decal that doesn’t look right it’s marked Johnson Seahorse 3 ? Final question does the prop come off like the newer units with the shear behind the prop or is mine just in need of a little pressure ? Thank you I can’t find any pictures .