Well I tackled the job yesterday and it was a horrible job, I have done lots of work on cars including engine changes etc and I rank this job as one of the worse.
Managed to balls it up though, even though I took ade's advice I snapped the sodding breather stub pipe off!!!! Absolutely gutted when the tank slipped slightly and caught the pipe and snapped it clean off.
Had to sleeve the broken pipe with a smaller metal pipe just to get everything back together. I will have to get a replacement tank and redo the job.
Gutted.
Anyway here is a picture of the leaking pipe.