Got the top off no problem, just stunned that all that holds the top on are the surface burners and the flimsy brackets they screw into.
Turns out the oven control panel itself appears to be fine. Problem is with a black plastic cover that snaps over it and has a series of 10 plastic flexi thingies that sit between the back of the surface touch overlay and the surface mount buttons on the board. When you touch "more" on the surface mount this engages the button.
My problem is the "more" flexi thingy is broken off. This flexi thingie cover does not appear on the parts diagram nor on the parts list so I assume it is/was available only as part of the oven control panel which of course is no longer available.
So plan A is
#1 - Cut out the "more" square on the overlay (it was cracked anyway, this is probably why flexi thingy broke) put everything back together and for now use a pencil eraser to poke the more button.
#2 - Start calling/emailing the people who repair controls to see if by chance they have any of theses left from unrepairable controls.
#3 Go pop a La Fin Du Monde...
And cogitate on how I can fix or hack flexi thingie thing. 3D scan and print the part? Glue a frame on the back to hold a wood block to replace flexi thingie?
#4 - find the real name for or come up with a better name for flexi thingie.