https://github.com/Xinyuan-LilyGO/TTGO-T-Display thanks to spradlinb fot the following gem of wisdom.
"Be sure to comment out the default "#include <User_Setup.h>" line of text in the User_Setup_Select.h file that you add the "#include <User_Setups/TTGO_T_Display.h>" line to. Keeping both lines will cause the screen settings to be incorrect. "