Thanks to all , finally have had the time to clean the injectors and re-assemble. Bingo , bike now purring like a pussycat. The final diagnosis was a combination of many little problems, gummy fuel tank and faulty fuel pump and varnished injectors and sticky clutch switch the main contributors. Still it was a great learning experience and great way to get to know my new bike. Also fixed 3 indicators all faulty wire connectors, replaced with bullet joins. One quick question, approxiamately what temperature should the thermos fan kick in ? I have idled to 75 degrees and it still hasn't kicked in ?