Anyone have encounter wz the gearing...
Problem:
1. Is it true when u kick into 3rd gear but it stay at 2nd gear?
2. When u kick into 4th or 5th gear(when u the RPM nearly hit 10)...all of sudden it drop by itself to 3rd or 4th gear...

All this i encounter during my trackday .....

No. Can't say I do.
Are you doing clutchless shifts?
Is the track bumpy in the area you're trying to shift at?
What's the condition of your shift ratchet inside? There's the wheel that rides over the detents of the shift drum. If it's worn or damaged somehow, it could be allowing the drum to rotate up or down.

lubricate your gear pedal , where is that black rubbers.

I have no idea what your talking about but it doesn't sound good

sorry of my english, the problem that i encounter when i exit from corner on 2nd gear, then i jump into 3rd then 4th..when the rpm start to pull at 9 or 10rpm...it suddenly jump back to 3rd...this happen also on 5th gear also.