Rear shock questions

[cruhl01]

I have an 05 400ex and when I do some jumps it bottoms out in the back. My exhaust and my airbox are hitting my caliper putting dents in them. I adjusted the screw on the shock but it didn't seem to do much. I tightened the spring but it still hits. Is there anything else I can do to it or does it need worked on or replaced? I weigh about 160. Thanks for any help.

[matt14c]

If you have rode it alot then it most likely needs a recharge at the very least. Could have a bad spring or borken seal. You weighing that much it should not be bottoming out unless your really launching it.