I don't always mind a bit of light spill over the first few frames. I generally "waste" 3 or 4 frames before dedicating the rest of the roll to important shots.

[AgentL]

Yep, I do that as well. Cool shot!

[ignath]

indeed, sometimes these light leaks produce very good effect.

[reh321]

indeed, sometimes these light leaks produce very good effect.

I had a 35mm cartridge 'damaged' - and the result was a roll of damaged photos ..... I have never tried to fix them.