Is it possible to adjust the front end under the fork top caps or no. Also can I change the fork fluid by draining it out the bottom and refilling it the same place or no? Front end seems real light springed, like they need made tighter. Im usually very mechanical, but never had forks apart, and these are different from other bikes I have owned, other had adjustments on top for preload and damping. Mine is an 04 B.