>>352090971
How are you pulling the handle? A rigidbody with VRC_Pickup becomes kinematic when you grab it i.e. no longer is constrained by joints. The usual strategy for 'grabbable but still constrained' rigidbodies is to add an invisible spherical rigidbody with VRC_Pickup that's spring jointed to the visible, constrianed rigidbody (e.g. the door itself). When you grab the invisible pickup, it exerts the spring force on the visible door. When you drop the invisible pickup, you'll want to add some udon code to snap its position back onto the visible rigidbody so it no longer exerts any force.