Can you explain how to do this?
:-)
Maybee some pictures ...
a) Get an Ohmmeter or DMM
b) Get an HB or softer Pencil
c) Locate R02F resistor. Donot mod R01F.
d) Make sure R02F measures 1.3KOhm
e) Rub pencil on the surface of R02F 3 - 4 times
f) Measure resistance, if it's 1.2K plug the board in
g) Measure output voltage, and repeat steps e,f if necessary for fine-tuning

h) Hash like a
boss