thanks for the reply guys.
my electronics are fine. I've scratched my clutch bell once, and trimmed down the posts ever since.
I'm not too sure if I am checking the one way unit at the transmission correctly, but when I rotate it anticlockwise (looking at the car on the side where the gears are), it spins freely, and when rotating it clockwise, it locks fine and drives the belts.
Or could it be the problem only shows on higher speeds?
*another problem now is that I could not find another r40 owner to borrow his 1way and try it out on my car. Nobody drives it anymore here.