My left fork seal is leaking slightly. I read previous posts on using a piece of plastic or 35mm film to run between the seal and fork for an easy fix. Is "the seal" that is referred to the dust seal or the fork seal under the dust seal? If it is the fork seal then I assume the dust seal has to be removed. Any tricks to do this? If it is the fork seal isn't it hard to get anything between it and the fork? Any help will be much appreciated! Thanks.