Hoping for some help sourcing a part for an Oris Big Crown which I am in the middle of servicing. The watch movement is essentially an ETA 2836-2 which had sustained damage to most of the keyless works especially the ratchet wheel which ended up with very few teeth left on it. Not sure how this had happened but the owner had noticed some slipage when winding but not the accumulation of debris inside the display back. Needles to say the movement was heavily contaminated with material from the ratchet wheel. Following a complete strip, clean, rebuild, lubrication and a number of new parts its now back to working and running well. Only problem is the movement has a sub seconds dial at the 9 o'clock position but the pinion, which is driven by the third wheel is damaged. I have done the usual search with my goto supplier for parts, Cousins, but cannot track down a replacement pinion or even find any reference to it on the net. Any help would be most gratefully received.