Hi guys,
I'm really happy to announce you, my friend ,the watchmaker Domenico, solved SEC at 6 Daytona problem on A7750.
The mod do not envelope Teflon or other strange and exotic treatment,
Domenico get 3 correct size rubies under the central well gear,
ad that get the A7750 running smooth and perfect with the extra gears!
The mood is possible to be applied to AP ROO Sec at 12, and PORTOGHESE or INGENIEUR Sec at 6, and off course he work perfectly in SEC at 6 Daytona 116520 .
Personally , I hardly tested one modded Daytona, for two mouths ad half , ad it's is perfect time keeper.
Take please in count that the modd is not easy , and not cheap, it require total movement dismounting, modding movement base, add the 3 rubies , remounting and get a complete service.
Finally I'll get my Daytona 116520 and my new IWC Porto coming.