I would differ with Ashley's optimism. I owned a caliber 2500 and it stopped several times. The problem lies with improper lubrication of the pallet jewels. Funny thing is, the oil isn't used to facilitate smoother operation since the co-axial was designed to not need lubricant, it's used as a sort of cushion to soften the impact of the escape wheel teeth. Omega is trying to run the co-axial escapement much faster than it was designed to operate at and the impact was causing the surface of the escape wheel's teeth to become misshaped. The 2500 also uses a modified structure for the co-axial, done to retrofit the escapement into the caliber 1120 (an ETA 2892-A2) - a movement not designed to utilize it so space was an issue. They have the correct layout in the caliber 8500, which was designed from the ground up to optimize the co-axial escapement. A 2007 watch will be out of warranty so you'd be on your own paying for any service.
I do agree with Ashley that we need pictures of any Omega watch you've owned or are thinking of owning.
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