On 22/01/2021 19:20, alan_m wrote:

If slotted overpainted screws use a (maybe sacrificial) screwdriver.
Heat the and end of the screwdriver hot enough to cut/melt through the
paint to get firmly into the slot. If slotted consider replacing with
new cross head.

Good luck getting an overpainted cross head out...

I've always cut the paint out with a Stanley knife on slots. Wouldn't
want to have to do it to a crosshead.

Andy