... for those unaware Chris Heal is Chealwatch Ltd who say they can supply Oris Parts, Andrew Charles Ltd are the official Oris repair centre.
it appears what these guys are wanting is for me to send in the watch £7x2 SD postage, then one of their engineers to look at the watch, scratch his head then push in the tube, maybe takes 10s give or take a second or two. then fill in an invoice for £50 plus part £2.99 ???