Yep. That one works.
The simple answer to your question (why are 120's maxing) the fuel pump is not keeping up for one reason or another. As the afr's lean out the tracking in the tpro adds fuel resulting in higher injector duty cycle. Any compensation in the high tune raises idc.
Things look better since we cleaned the filters but idc still on the high side. The fuel pressure gets erratic under pressure further leading us toward fuel pump.
It would be nice to bolt a different pump in and see what happens. Another thing that might help is a boost a pump or running a second pump.
RL