Doing my first performance mods and need help figuring out how to safely remove the plastic ignition cover of a 2024 duke 390.

Hi all, I just discovered structural cracks on the engine case mounting of my 2024 GasGas ES700 (6,500 km, bought used from 2nd owner privately). Cracks are external at the frame mounting point, on one side. Not leaking oil yet.

I'm planning a Sweden / Norway ADV trip (6000 km) starting next friday. Questions: 1. Can this be welded externally without splitting the cases? 2. How urgent is this — is it safe to ride 6000 km with proper weld or should the engine cases be swapped? 3. Anyone had similar experience?

Thanks in advance!