Yeah that's the odd thing.
With Either track 1 or 2 selected, both track meters are active and always only channel 1 meter on the TTS GUI
Instrument track 2 meter never works even if selected.
On the TTS GUI, CH 1 says piano and CH2 says organ.
In it's system /options /outputs, Part 1 is piano, part 2 is organ, and organ is set to output 2 and multiple outputs is checked.