GQ squealing brakes

[slurp]

so recently i have fully rebuilt all the brakes on my safari... new rotors, pads pistons and seals
but since then i have been getting a loud squeal from what i think is the front brakes i have pulled them apart again and cant find any evidence of any scraping, but the metal clips holding the pads in are loose.
any ideas on a fix? or anyone had the same problem
cheers

[Crash bandicoot]

tweake them with a pair of pliers till they are no longer loose, as it will be the pads touching the rotor as apposed to the clips