Can someone describe how to remove the grey windscreen pillars on my Plus 4?

Is it just a case of undoing the countersunk allan screws or are the pillars bonded to the screen and or the scuttle?

I'm taking my wheels to the powder coater tomorrow and looking to have the screen pillars powder coated gloss black at the same time, so I'd like to remove them tonight if it’s not too much hassle?

Thanks in advance, Dave.