According to the maintenance schedule on my 2008, the valve clearance is suspose to be inspected at 14,500 miles. I've now got almost 18,000 miles on her and haven't done it yet. Sooo--my question is-- how important is it to have this done? She seems to be running fine. I have neither the time or the expertise to do this, so I'll have to take it to the dealer. Should I take her in and have it done? Thanks for the advise!