SmellySOHC

so a few weeks ago i installed drilled and slotted rotors on the fronts.. i got em from lsd.. and i used some bendix pads pretty decent ones, ran about 50$ and now when i turn corners or brake lightly they kinda click..
and i know its nothing else, it IS my brakes...
i drilled out those two philips head screws that held on the ol stock rotors.. are those something that i should replace and would that help?? is it just because i have those type of rotors that they are loud?? i lubed up everything with what i shouldve.. any ideas im open thanks!

im also going to completely flush my lines and put new brake fluid in... whats a good kind i should look for?? how much will i need?

this is in an eg thanks.