Finally found faulty part.. it was a faulty sensor after all. I ended up swapping a sensor from a working drive and works perfectly. Have cleaned the other sensor and resoldered connections and cleaned the plug but still doesn't work. Have tried testing with multimeter but not too sure what I'm testing for. Anyone know where I could find replacement sensor for this? Part number on sensor itself is 1110 47 and on the sensor PCB is 1-605-399-11. Also what is the easiest way to realign this sensor or it is just trial and error?