Many thanks for all reply .
I don't find the time to investigate more because Some other cars were needing more attention but will let you know asap.
I also do all by myself on my cars for a long time then the goal is to sort it if not usual !
Like some TVR you can feel the heat of exhaust and gearbox but in that case there is an higher flow coming from the steering .
"Phillipo" , why not meeting you ( we are not too far, I.m located 50km west of Toulouse ) and compared our cars for any thermal screen different design or miss?
The car is RHD, just in case .
Fred.