Hello peeps  . I'm currently driving NHC 09 , just done 30,000 km service 1 month ago. Few days ago, I had this problem , the gear ratio seems like got some problem and not so smooth gear change. When the first gear 1st gear turn to the 2nd gear it got slightly jerky as usual , but from 2nd gear to 4th gear after gear changing , the RPM previously is at 1.9k but nw it will drop till 1.5k (didnt release the accelerate pedal) which cause the power loss , I have to accelerate more in order to change to next gear at 2.1-2.2k , any 1 experience this before? Any 1 can enlighten me bout this? Thank you.