There is a pedantic and unhealthy obsession on this board with balancing injectors. Get them within the range specified in the factory shop manual and call them perfect.

The priorities in injector work are cleanliness, sealing and spray patterns. Read the book.

If you want to spend your time and money balancing injectors to the nth degree, you have nothing to lose but your time and money. Don't expect any real results. You do get bragging rights, anyone who knows what you are talking about will only be impressed that you wasted your time and money.

Read the book.