Len,
yes that's exactly what I was refering to .. thanks anyway but I managed to source some suitable tubing. Thanks very much for the offer.
Thanks also for all the replies. I was leaning towards the fuel injection hose but eventually found some line which is suitable. It looks to be of a similar material to the original line but a bit thicker wall thickness/outside diameter. Despite this, being new it is more flexible so was a good easy fit.
(I was getting pretty sick of being told of potential solutions but that it wasn't worth them getting it in cos they would have to order x metres/rolls/whatever of it in .. Anyway .. whinge over!)
Surprisingly even Howard Instruments here in Melb had nothing suitable.
Anyway, job done.
GG.