Hi gents, I have a 2016 Seat Alhambra, that I bought brand new. After a few K of miles it started to rattle from the B pillar on the passenger's side. It is quite loud and annoying, sounds like small metal pieces vibrating within the B pillar. The problem with bringing the car to the dealer is that the rattle is not constant and even when I was able to reproduce with them they returned the car honestly admitting that it stopped doing without doing anything on the car. No surprise a few days later it was on again ( and off on the next morning), and now it is been like this for months ( on and off). It is quite loud and very frustrating. Have tried multiple DIY including ones involving separating the sheets of steel and applying some white lithium grease () But there was no success. Any ideas, .... ? This is so frustrating on my car that I don't want to drive it.