Question for the LX470 and LX570 owners. Anyone found any mechanics that understand the AHC system? Need a line replaced on my 570 as there is about a 2 inch stretch of metal that is rusted and burst. Lindsay Lexus quoted really high and when I talked to the lead mechanic he didn't seem to know s*** and said he hadn't ever replaced any lines on a 470 or 570. Ordered the parts and going to take a look and attempt myself, but in the likely event I end up taking it in, looking for somewhere to go. Already saved over $100 buying parts from another dealer online. Thanks.