I have this problem. In typical fashion, the dealer assured me there was no issue because they pumped it up to its highest level, and lo and behold the next morning it had not gone down one bit. I choked back the laugh and asked him what were to happen to his experiment if he placed, oh, say a 235# weight on the seat and jostled the JK around to simulate driving conditions? I think he got the message. They then stated it was my seat covers. So, drove back, took the seat covers off, and the problem still exists. The manager agreed it was not the seat covers and they'll take a look at it on next service. But after reading the posts, now I'm wondering if I am hitting that damned handle on the way in.