Mornings job swapped the rusty old centre section for
A nice shiny new one , jobs for the afternoon coolant change, stainless braided brake lines and replace the the two centre vents to ones that can be closed 
Closing vents fitted without any tool marks in the panels thanks to @MickAP and @bally3 s details here
https://forum.mx5oc.co.uk/t/mk3-pesky-air-vents-removal/108754/10
Improvised removal tool
Thanks for the details:-)