I'm working on restoring a 1969 Chicago Coin Pirate Gold that has seen better days. I thought that I'd post here how I redid the shooter guide to bring it back to new life. The arpon will be much the same.
The original guide was trashed with rust and chipping. I wire brushed off all of the rust and used a high build auto primer topped with white primer to restore the surface to like new. I then used a scan that I had made of the guide that I had cleaned up in Photoshop and then imported into Cricut Design Space for cutting a vinyl mask layer. That was applied to the shooter guide and I mixed blue and white Createx Paint to the right shade of blue as well as black right out of the bottle to paint the graphics onto the shooter guide. The mask was removed and the end result is really nice. I'll shoot the entire guide with clear coat when I get out my sprayer for clear coating the playfield after that is restored.