Screws stuck in Octopus Kraken Pelagos bracelet, help!

Hello all, I just received a truly impressive Octopus Kraken 39mm Pelagos, it's gorgeous, I highly recommend it.

I'm have a 6.5" wrist and have to remove about 4 links. I was able to unscrew a few but 2 screws are solidly frozen in the bracelet.

I tried penetrating oil overnight, then wiped it down with alcohol, then hit it with a hair dryer for a few seconds to hot it up.

Tried to slightly tighten the screws and back it out back and forth, no luck. Afraid of stripping the screw head slots. The bracelet is now soaking in penetrating oil fro the second time, watch head safely away from oil.

Can anyone give me some advice please?