I noticed my beat-up Olympus XA that I just acquired has significant light leaks in the first roll of film I developed. No surprise, as the old foam is just straight up moldy goo now. I searched around today and found a sheet of dark-colored foam that came in the box with a pair of headphones, but am wondering what the best trick is to stick it firmly in place. I got double-sided Scotch tape and tried to match the width of a tiny strip of tape to the width of the strip of foam I cut off, but it's not perfect and I'm afraid junk will get stuck on that adhesive over time. Is there a better way that I'm overlooking?