What serious problem does he discover about gimpy? why does he struggle with it? Whom does he talk to? how does he finally resolve the problem?

Gimpy is undercharging customers and pocketing his portion of the difference as the customers passed money back to him.Charlie doesn't like Mr. Mr Donner being cheated by his own employee. Charlie asks Professor Nemur and Dr Strauss and Alice about the moral dilemma. He decides to tell Gimpy he knows and to make it stop or he will tell Donner.