Genset issue: 2-3 year old 40kW NL gensets with close to 8000 hours on then. Recently service on injectors and injector pumps. They run fine. Problem: If the load on either unit gets much passed 100 amps the unit lugs down and can’t handle the load so the second unit has to be brought online and the load split. The boat apparently had the same issue with the original gensets which were Kohler 40kW units. Thoughts?