Got it sorted finally.
Used a MK1 throttle cable. Cut the ball end off and shortened the outer shield , filed the ball off the throttle pedal and fitted a clamp type bolt through hole, attached cable to pedal, added chocolate connector to cable for extra insurance, made up throttle bracket off engine mount bolt, attached to carb, set throttle cable to get full throttle and made sure throttle returned fully. Goes a lot better than 32/36 downdraught.
Don't use Lynx throttle linkage kit - absolutely no good. Better to get proper Weber linkage then no probs, just more expensive.