Rarely, touch-ups were done when necessary to molds in production (usually to fix damage caused by operator error, but sometimes to add new flash channels or fi

Rarely, touch-ups were done when necessary to molds in production (usually to fix damage caused by operator error, but sometimes to add new flash channels or fix other issues). AFAIK, iteration is usually kept to the prototype stage with aluminum molds and production molds are generally considered 'done'.