Karnak: I forgot about the Brew... And the SBD, too!
But now that I think about it, I think rather than a generic 10% HTC has modeled all foreign models after the US rate of fire. The stock is 800 or so, and we get in the 650 range for our US planes. That's about 20% loss. That seems to match with synch'd US rates of fires, so the Brew, SBD, P-40B, wouldn't be affected. Just the foreign rides.
Problem is that even though they're based off the Browning, the Breda SAFAT and the Ho103 don't act like it. Different rounds as well. It's natural they'd have their own rates of fires.
Now they know! Hopefully they'll update those Japanese and Italian models.