Jeremeymt

Ok so me and my friend changed out my brake pads front and rear. Everything goes fine and i have this awful squeek coming from the rear. So we take them back apart and re lube and apply brake quiet and just cant figure out what the problem is. So tonight i take them back apart again and FINALLY notice 3 of the pads are the same and 1 is different. Arent there suppose to be 2 that match and 2 that match (2 inner and 2 outer). The 3 that are the same have 3 "nipple" looking things on them and the 1 that is different only have 1 nipple thing. I believe this has to be the problem unless im completely wrong on this. I honestly have never changed out brakes before but i had help with someone who has. If this is the problem its not gonna be a pretty sight when i go back up to O'reilly and have them take my wheel back apart and take the brakes off because i have already done it 3 times!