Man, I didn't realise how this thread would take off! Thanks guys for your support. From the look of things, it will just be a distant memory soon and I will be a bit wiser next time.
I think there's always an element of risk attached to this sort of thing, and after so many years without a bike, I did not have the benefit of knowing a 'trusted' workshop.
The comments about the 'clear coat' applied to the paint was useful. I guess that a person may not know if the paint job was done properly until they started to get staining from gasolene (at which point, it would probably be too late); even more glad I'm geting a proper factory sprayed tank now.
A couple of members have asked me to disclose the company and for reasons I have already covered, I'm not going into that. Anyway, it looks like they are now going to do the right thing by me.
