[ProfDave]

Originally Posted by GazYorkshire

Had my 75 for about 6 weeks now, after reading this thread I thought it was time I checked mine.
It appears that someone has modified my central one - it has a grommet type thing at the top, which looks like the original, but there's no centre in it.
Underneath that, there is what appears to be a length of rubber tube with an inner diameter of 10 - 15mm which goes town to the floor level of the car.
Shine a torch down and I can clearly see the road underneath, it's not blocked & my plenum's bone dry.
Seems like the old girl's had a pretty enthusiastic owner at some point.

looks and sounds like my first 75 but I doubt its all the way up there!!