Right by using a right angle flexiable screwdriver and having my daughter turn the throttle so I could get the screwdrider on to the number 3 cylinder screw I was able to adjust the number 3 cylinder to get the following new readings....
Cylinder 1- 640 to 650 new reading 620 to 630
Cylinder 2- 650 to 660 new reading 640 to 650
Cylinder 3 -610 to 620 new reading 630 to 640
Idle RPM fluctuated from 830 to 880 RPM new reading 840 to 850 RPM
If I can find a smaller right angle flexiable screwdriver I reckon I can get onto the number 1 cylinder adjusting screw.
I will have these little suckers 100% without have to dismantle the air intake system, maybe the Triumph workshops have a special screwdriver for this job?