How to remove the toilet seat cover?

[Tiong]

Hello folks,

Trying to replace an existing toilet seat and cover as the screw fittings are pitted and corroding.

I am not sure how to remove the screw fittings though, the only thing I can see are 2 small caps (left side circled red in 1st pic) which are difficult to dislodge.

Should I drill them out and can then reach the insides ?

Thank you.

Small cap circled on inside

[Tiong]

Thanks Mitchell/Jason/Brad for the helpful messages and advice.

I couldn't make progress and had to call in the experts.

Hopefully my next project will less troublesome!

Cheers!