Recently I changed to my new clutch and flying wheels, etc. When I got my car I did not notice anything but after a few days I was driving on the road I realized that when in 3 or 2 gear and at 2500 rpm, if I released my gas peddle (with that I mean put your foot away), I could hear some noise coming from the bottom, sounds like some parts are having some unusual firction in it. When I push down the gas, nothing happens, only hear the noise when I release gas at 2500 rpm at gear 2 or 3. Anything has the same question before? I konw it probably because of the new clutch break in period but I cant really sure if that's the clutch or sth.