The engineer thought he was doing us a favor by making the fillets smaller so, that it would be easier and faster for the welders. I explained that this was not the case, showed him the section in the commentary about fillet weld sizes are, in part, to ensure sufficient heat input to prevent cracking. I explained about the 48 hours for NDT and showed him the section on maximum single pass fillet weld size.
...So, he's gonna make 'em bigger.
Thank you for your help!