Has anyone else had this problem with their Tacoma? Seems like ever time I wheel up and down steep slopes air gets into my braklines. The air doesn't enter for any other reason, I could go wheeling all day long and be fine but as soon as I do some steep uphill and downhill stuff and have to use my brakes the pedal never stays firm after. It's not total mush, just won't hold firm like it should. By the way my truck is a 2002 extended cab V6 TRD with the 6 inch fabtech lift running 35" X-Terrains. I read the sticky didn't want to leave my info out.