Might think about doing the breather lines in my bus over te, 2 questions 1, would someone point my the right way to change them? 2,what do I need to buy? Ta much.....
Have a look here: http://www.ratwell.com/technical/FuelHoses.html I fitted all of my breathers with clips as well - OEM is just push fit. Long arms help. I'd look at the main filler hose as well while doing the job.
I was going to suggest use the 5.6mm r9 hose however there seems to be some issues with it recently. I've only just replaced mine with the stuff. Anyhow it is the same pipe for both fuel lines and breathers. Soak the lengths of breather pipe in boiling water first, makes it much easier to go on.