When the bike is cold, and I have to ride it through my yard to get to the street, it sounds like the forks are making a clunking sound when hitting the bumps. Could this be because they are cold? Is there a way to test the forks compression, or oil? And how sensitive are the adjustment screws on top of the forks? like, does half a turn make a big difference, or do you have to turn it a few times? I never messed with any of the fork settings.