Hello all, I'm only new to this board, and don't want to appear as a know it all. However, I have hade a lot of experience with cats and prestige vehicles in general in the area of solving anoying vibration problems. Due to a confidentiality agreement I have signed, I can't share everything with you, however there does appear to be a lot of mis conceptions out there about how to rectify these problems. If you would like to know more please contact me by return post and perhaps we can have a discussion that will enlighten those that read it.