G'day,
timing results on a winder may differ; actually there´s a couple of watches to respond much better when wound up on the wrist than by the winder.
Nonetheless, in any case the timing result of the FTC is way off and you should get in touch with your GP AD.
Cheers,
Peter
Just to let you know what to expect from GP performance.
My GP Seahawk worn daily and kept moderately wound is currently @ +6 seconds after 6 weeks of use.