"Wish the thermocouple tip can be placed touching the PCB, then it would be perfect."
Indeed, but the design makes that impossible. The tip would get hit as you close the drawer.
" But the program has been programmed to compensate the differences between the board temperature and PCB"
That's impossible
Try it - with a TC on the PCB. You will be lucky if you get within 30C, and it won't be consistently too high or too low.
" I created my own profile on the software where the resulting curve has higher temperature."
Yes - that is the standard suggestion, but you will spend a lot of time playing around with that, and you will need a PCB which can be wasted.
"For me it's perfect except the plastic part for lead free profile."
LF is a PITA. For small volumes, use leaded
" I think there is a control board modification is on order for the T962 to support temp sensing mod"
The ES controller works well. It doesn't display a graphical profile but it controls the temp fairly well. I brought out both TC inputs on wires, about 50cm long, as shown in the linked thread, and they go into the drawer via the gap underneath the front of it. The ES controller uses only "A" sensor so the "B" sensor is available for monitoring. I brought both out.
The main issue is that the heating is almost totally radiant, hence sensing of the PCB itself works quite well. Some airflow would be great but it isn't easy to do such a mod. The mod I did does work but introduces vibration. The proper mod is a large impeller mounted underneath the heating tubes but this is difficult and messy to do, and would need a slow running motor.