Instructions
Go through the large door when the level begins to enter the Gremlin Village. Gus asks you to save his house from the spraying thinner.
Go to the right and look for the steaming pipe. Aim the cursor at the pipe and hold down the B button to spray paint at it and repair it.
Spray the other three steaming spots on the pipe with paint. When they are all repaired, the valve in the center of the plaza activates.
Go to the valve and press A to turn it. The thinner stops coming out of the pipes, and Gus' house is saved.