08-06-15, 11:15 AM
Now fixed!! 
Turned out to be the red supply wire to the ignition switch that was broken inside it's insulation about an inch short of it entering the underside of the switch housing. There was no evidence of a break from the outside of the wire but when I bared back the insulation the copper strands were black from the break point all the way back to the plug under the tank but were ok from the break point to the ignition switch housing so I replaced the bad section and jobs a goodun. Luckily I had that inch of good wire left to crimp on to or it could have been costly.
ps No low rev (1500-2500 rpm) hesitation and vibes any more either!
Thanks all for your help. :thumbup
Bob
Turned out to be the red supply wire to the ignition switch that was broken inside it's insulation about an inch short of it entering the underside of the switch housing. There was no evidence of a break from the outside of the wire but when I bared back the insulation the copper strands were black from the break point all the way back to the plug under the tank but were ok from the break point to the ignition switch housing so I replaced the bad section and jobs a goodun. Luckily I had that inch of good wire left to crimp on to or it could have been costly.
ps No low rev (1500-2500 rpm) hesitation and vibes any more either!
Thanks all for your help. :thumbup
Bob