|Aha, seems I was right about the north island then - managed to place "the rod run" not so very far from Auckland. Hate to admit it but my real photography interest goes back to when cameras had rolls of films and F numbers - even managed to win the odd prize. Since then it's just been digital "snaps" of the family plus old tramcars (trolleys), mainly preserved, which are a quaint interest of mine.|
Sounds like your shutter mechanism is a bit dry, hence it fails after a period of use. Unfortunately sorting out those sort of faults is specialised. I don't recommend attempting a fix but one thing I learned is to discharge the flash capacitor before you work on cameras, otherwise your fingers zap the electronics.
Always pop back and let us know the outcome - thanks