I just bought a Kodak viligant six-20 and the frame has a few issues. There is a rivet at the top that comes loose and it won’t lock into place and is crooked. I can pop the river back into place and hold it and then it mostly works. The only problem is there is a pin at the bottom that won’t stay down all the way and when I push the shutter button it misses the lever. When I hold a lot of pressure on the top and bottom it holds everything together and it works. What can I do to fix it?