I've been searching the forum for a similar topic, but it seems like everyone has problem with the brakes, but not the levers.

I have drop bars with Tektro aero brake levers (r100) and tektro inline brake levers. When I activate the aero brake lever connected to the front brake, or the inline lever connected to the front brake, both levers make a squeaking noise. Any ideas on why it's happening?

I'll try to get a video of the problem soon.

Thanks for the help.