Thanks guys, as mentioned mine is a 1983 model with the bikini and belly pan fairings in red, white and blue.

I was working in the service department at Milledge brothers when they came out, "Oh yes" we all said. Water cooled (power maintained with) power valve (torque and horse power) mono shock rising rate suspension, triple discs (all good in the twisties) oil injection (no mess unless you spilt the oil when filling tank) Every body wanted to take it home for a blat.