Omega Seamaster 200m Pre-Bond Autowind

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A few months ago, I picked up this Omega Seamaster 200m Pre-bond 2-toned solid gold 368.1061 Automatic. I figured it needed a good overhaul, but heard about the lengthy lead times Omega has been having, so I sent it to watchrepair.net after reading glowing reviews and mentioning the owner is a master watchmaker.

I got it back and it's been keeping great time. Amplitude is 280-290, beat error. 0.2-0.3, with around +3 seconds gain. However, I can't get it to run past 30 hours after a full wind and put on the dresser. Wearing daily, it won't auto-wind past 4 days of and quits.

Is this normal for this particular watch? Shouldn't it be getting over 40 hrs reserve and keep going indefinitely if worn daily?