OK makugx, some things you don't know.
1. There is no spider gears to weld in the VLSD. Where the spider gears would be. Is a sealed unit with silicone fluid inside. When the fluid gets hot. It applies pressure to a set of plates to lock the diff. The problem is overheating, then it goes to sh!t.
2. With the yaw sensor in place. VDC on. When going through a turn. If the rear starts to step out. The VDC WILL apply a rear caliper brake through the ABS to straighten the car out. First time it did it to me. It scared the crap out of me and a driving instructor.
With the VDC off. It WILL still happen to a lesser degree. With the yaw sensor switched off. Nothing will happen.
3. When you type. It sounds very angry and condescending. You might be a great person face to face. But something gets lost in translation.