Pickup Item (Floor Lamp) falls on floor after hitting play

Could anyone help me out with this?

I’ve made a pickup blueprint for my Floor Lamp (in VR) which is’nt a normal symmetrical floor lamp, and when I hit play and I would go through the interior, the lamp has fallen onto the floor. As though the gravity center point is not on the big marble stone. (See screenshot)

And roughly what I’ve done is recreating the standard BP_pickup_Cube to my floor lamp.

Is there a special blueprint node for letting know where the dominant weight of the lamp should be? Or something else I must do so that the floor lamp is “Pickable/moveable in game” and standing as it should be?

Many thanks in advance!
And if any more information is required, please let me know.