Hi all,
Well it then looks like another complete strip down and thorough cleaning out. The fuel lines were all replaced with new stock and the filter was reverse cleaned with throttle body cleaner. Tank was totally flushed out and chemically super clean when finished. the only thing I didn't replace was that gauze filter but it was blasted through with throttle body cleaner under pressure also.
Anyway I'll try again and see how we go.
Thanks to both of you for all the input. Every little bit helps and gives oneself a different perspective of the job at hand.
Cheers,
BB.