Ive bought some different mouth organ-ish style tank badges with rubbers, but when i went to put them on today I see the badges are secured by two star shaped screws but there is a raise 'nipple' in the middle, so muy various tools dont do the job, is there a special tool to metod to removing these - can they be re-used once removed?

cheers
Simon

It may not be possible to polish a turd, but you could always roll it in glitter