This problem happen when after car warm up. The gear shift movement will become harden. There is like no centralize feeling. Example from 3rd gear pulling down to neutral, in between the movement at any moment u let go your hand, it wont move or click to neutral even if the stick are very near reaching the center. Means to engage any gear, I have to ensure the shift goes all the way to end before letting go my clutch. Gear engage is still perfect. The shift is good feel during cold start.

Gear oil just change using Honda original, setup is TypeR linkage and original TypeR LSD gearbox. Before this happen, my mech did remove my gearbox checking the clutch pad, fly wheel and servicing the shaft(the "knuckle" joint at the "satellite dish" of the gearbox u see when detached from engine) and greased it. Before was also on Honda original gear oil when everything was fine. Mech says nothing was missed during the process.

Anyone can help?