Could it be the rubber seals squeaking? If so, try using Shin Etsu grease. You spread a very thin layer of this on all the rubber seals and it both protects the rubber and usually stops the noise.
http://www.amazon.com/Honda-Genuine-Shin-Etsu-Grease/dp/B006Z9TZ9M
I bought a tube of this for my Honda S2000. I used it twice a year for seven years and still have at least 80% of the tube left. For $15, it's worth trying.
http://www.amazon.com/Honda-Genuine-Shin-Etsu-Grease/dp/B006Z9TZ9M
I bought a tube of this for my Honda S2000. I used it twice a year for seven years and still have at least 80% of the tube left. For $15, it's worth trying.