FINALLLY!!! It works. The bike now IDLES and Idle reallly goood!!! See the video..
I think it was the crapy intake manifold is the culprit. or could be the throttle cable (because of the kink inside the throttle housing).
Anyways I took the engine off the bike and reassembled it all back again. I called Ridleys and walk me through the re-install and re-mount of the engine. Almost all of the parts was upgraded..new studs from SBP, new intake and throttle cable, new NGK plugs, new plug wires and cap, new fuel filter.
I can feel the engine is really strong and notice a big deterrence with new NGK plugs and Accel wires.
Thanks to all members of the this forum. You guys really stick it around and help me solve this problem. You're the best!!
YouTube - Motorized Bike Idle