Note: I don't have a campervan, nor have I ever used these for anything but I designed them for a friend who believes they work well.

• Parts may require some sanding to get the best fitment. Tolerances are tight (I'd recommend sanding the striker surface so it actuates smoother)
• You need four 15x6 springs and three M3 screws to complete the build.
• One of the springs goes under the striker inside the main body (see photos)
• Tap M3 holes into the open end of the posts (you need to print three posts per latch!)
• Compress the latch when you're putting in the M3 screws so you can put some pressure on the end of the posts. Once the screws are in as far as you can put them, use a larger screwdriver on the other end of the post to help tighten up the screws.