Forgot to mention, the brake rubber is hard to get off. Pull it towards you from the top of the rubber or get some heat on it to soften it up.Remove the rubber then put the pedals up to the aluminium pedal. Mark the holes and punch a mark where you need to drill. Then slowly drill a small hole then open it up to a 4mm hole.
Did it today and really want to hard.
Most importantly take your time.