Just got my Campro CPS Waja last week. The last of it's species

My question is any campro & campro CPS manual user here has the same problem as me? The RPM revs up when my engine during clutch press and it's especially very annoying in jams. It varies but highest I seen it go is until 1.6-1.7k.

I'll try the release accelerator longer before clutch press method see if it helps (as found below) but any sifu got any tips?

other sites that i've googled:
http://www.mysatrianeo.com/2007/07/campro-...ruise-myth.html
http://forum.autoworld.com.my/index.php?showtopic=59406