The final decision on the stove is not out yet

I did manage to drill 5 small holes in each of the broken off screws - that in itself is pretty amazing - but non of the screws backed out trough the back, making me believe they where not tapped all the way or they used self tapping screws ( little chance as I don't think I could have bored holes trough those - at the same time I was surprised that the small drills actually went trough = case harden maybe ??

regardless the trick now, is to open up the small holes until I can tap them ...