I am trying to manually change the Leonardo PWM outputs that are from the 16 bit timer. Every guide out there says there is only 3 that are controlled by a 16 bit timer, but the datasheet from Atmel says 4. The issue I am running into is I cannot seem to compile. It complains about 0CR3A and 0CR1C. It says 'Invalid suffix "CR1C" on integer constant.' and the same for CR3A. Also, it complains about the TCCR3A register, it says it is not declared.... Does the Arduino not support me doing this on the Leonardo?