Any issue with the Clutch/gear shift should be checked and rectified immediately to be on the safer side. Is it all gears or any particular one? I had similar issue before CSC replacement. 3rd gear was a little difficult to engage. Post-CSC upgrade, it's butter smooth. There seems to be some minor issue with reverse gear. Not to the extent that I should report it as an issue. Sometimes it doesn't slot properly. FYI: I did my 3rd free service last week at Concorde motors last week, the SA (Harish) was very helpful in getting all things done to my satisfaction.