I have to replace the low beam bulbs (old and dim) in my 2004 LX470 and plan to use Sylvania silverstars (H1ST). Does anyone know how to repalce the bulbs. I perform light mainteneace on my vehicles and thought I was mechaniocally inclined-but looking at the headlight projectors, darn if I can figure out how to access the old bulbs. The owners manual says to have the Lexus dealer do it!!