Guys
If you stop the debris going down the drivers bonnet hinge area in the first place and cut the ends off the tubes, you can stop worrying and only yearly checks will be necessary when the pollen filter is changed!!
All info here
Plenum Shield
http://www.the75andztclub.co.uk/foru...ad.php?t=68328
Or whole shop here
http://www.the75andztclub.co.uk/foru...splay.php?f=74
Fit and forget that's what we like!