What two main things that cause Stacey to shun TJ?

Stacey realizes that TJ had conned him out of the coat that Uncle Hammer gave him. Little Willie Wiggins tells Stacey the next day that TJ had been complaining about Mama failing him on his final exam in the Wallace store and talked about the pasted book covers in front of Kaleb Wallace. Stacey begins to keep his distance from TJ.