Physics model imported flipped and out of scale

[khkiley]

Blender 4.1, Source IO 5.3.0

Whenever I import a model with physics, the physics model is mirror to the floor, and the scale is off.

This is train_wheels1 model from HL2 Ep 2,

Thank you.

[REDxEYE]

Scale is fixed, but i still have no idea what causes flip