Yes, i realize im filling the transfer case, and im sure the fluid is proper (RP Synchromax) and the notchiness is only prior to the oil change.
After the change, its smooth and alot better.
However, the issue to note here is if by filling the full 4 ltres in the gearstick, will that 2 litres be flowing over to the gearbox, as the mechanic have sworn when he opened up the gearbox, there is a connector hole between the transfer case and gearbox,