VW pd 1.9tdi 130 SE - DASHBOARD CLUSTER (IMMOBILISER) AJM ENGINE CODE - crownkings

hi, my key snapped during the week at the top of the flip. ordered a new one off ebay. when it came i swapped everything over from the old to the new apart from the rfid chip. when i went to put the old section that has the chip in, it didnt fit right so as i tried to take the old chip out it broke (oops) i rang an auto locksmith which came bout 20 minutes ago he said he couldnt programme via the diagnostic because its the AJM engine, he said i need to read the cluster from behind the clocks. anyone got a step by step guide on how to remove the clocks without damaging them? or is there another way of reprogramming the key without having to go to main dealer. thanks