I have a 2005 XT w/ about 43K miles that I bought new in CA. Within the first year or so of ownership, my sunroof began to have intermittent problems opening and closing. It was repaired under warranty. The problem has emerged once again, only now it's not under warranty, and my local dealer estimates that the repair will cost about $2,000. Has anyone else had problems with intermittent open/close problems?