Front Break Issues

[Bazooka SHO]

Front Brake Issues

Need some advice. I replaced the front brake pads and rotors several months ago. Lately I have been getting a vibration and sometime a grinding noise from the front driver side brake. I have checked the rotors an there does not seem to be any scaring. Also the brake pads look ok. Not sure if this could be a caliper problem or what? Any ideas?
93 ATX

 

[SHO SPD]

Could be on the inside pad being worn down. Take them apart and look at them well. you should find the problem when you do.