Beaten Tacho

Hello have got 1 week ago on guarantee a new tacho since the old was constantly fogged or wet, on the inside of the glass lake you also saw the streaks. so now new tacho inside and the same goes off already again my dieler meant the while normal and would not be exchanged on guarantee. that can not be that on a Harley which costs more than 20000 Euro the tacho gets wet and it is normal, even on my first motorcycle I had a dense tacho u and the stood summer like winter outside. oh yes it’s a 2006 Road King warranty has now expired but on the new tacho I have also again warranty or greetings from the elsace