I tried to fit my scraper to the sill brush and noticed the screw heads were messed up so decided to swat the screws for new ones i un done screws but one scremm has striped the plastic thed from the brush head and the new screw has nothing to grip to

How can i fix this will i need to drill the brush and use counter sunk bolts or will putting some epoxy in the holes work ?
Thanks Paul
