Gong foil with stuck screws...

[rnelias]

Use one of these screw knockers and it WILL loosen those fasteners:

https://www.browntool.com/Listview/tabi ... fault.aspx

Darn it. Now you've got me looking at air hammers. That looks a really useful tool. I've got the old fashioned mallet version and it won't often remove the screws if the surrounding area is too soft. That version looks a lot better!

in my case it was not an air hammer (I think it's too strong and could break the screw). I've used a cordless screwdriver with the "impact" attachment

this one:

WD40 and got loose much easier than I've thought initially