Hello! It took a long time, but it’s time for a change of the drive shafts. A few questions: 1. Which manufacturer can you recommend? (original parts are too expensive for me) 2. When is it advisable to change the shaft completely and not only, if possible, the joint set? 3. How expensive is the change. Is it advisable to do it yourself as a trained mechanic? 4. The prices for ebay parts are again underground favorable. This probably also applies to d he quality, right? Thanks for your tips! Frank!