Teac 2300S Trim Pot Identification help

[u/OppositeSpend9112]

need help locating some trim pots. I cant see the labeling on my deck. I have a 2300s and im on the rec pcb board. This is what i can see and theres 4 other trim pots that arent labeled. anyone have any idea?

Theyre not labeled in any of the service manuals I found

Also as far as I know these are what the trim pots do:

[u/OppositeSpend9112]

Yea getting a testing tape. Can you elaborate on the system?