MHO of course

Mainland Chinese Contractors have proven they are the masters of cutting corners. I've never seen more creative people. Example: In one case, a Mainland Company left out an oil pressure relief valve in a container load of small engines in order to (pocket the savings). Engines TYPICALLY ran 300 PSI cold instead of popping the relief valve at far less pressure. Imagine the stress on that oil pump. Fit an aftermarket oil filter and watch it explode
Manufacturer says...."Just return those engines, and we'll see if the repair qualifies to be fixed under warranty." That takes guts...
Time will tell if they can afford to keep this bridge in service. Only green peas will be envious..