My question to all who have chosen the R-Design Packet. 1. How do I care for the light leather seats best? 2. And how do I clean them best 3 Have after 100 km with my new car already so light bright spots inside next to the door opener how do I get the clean? 4. have a 1.6 he diesel engine will quickly burn down the crooked puffling off and how do I get them clean again? 5. Are these dark decor inserts vulnerable to scratches and quirks? in the curve clapping there my key ring which on the vehicle key always hangs against it.