I had the problem with the pulsating brake, it is a common problem, I didnt take it back because I know it would happen again.
The problem with the pedals is the pots move slightly out of place after time and use, pull the pedals apart and put them back in place in there holders, tape down the wires and I stuck some paper in between them to stop them from moving.
The main thing is make them real secure so the dont move even after use, you could use some blue tac or some people hav even glued them,
Mine have been working perfectly ever since and try not to be too rough on them as that will increase the chance of the pot moving.
There is many write up of what other people have done with pictures here http://www.gtplanet.net/forum/showthread.p...=pedal+problems
Be sure to read through the pages as there is lots of info on it. Some pictures you will need to be a member to view.