2005 FX4 recently purchased used. Checked the carfax and the recall was listed and performed at a ford dealership. I was having fun in the snow yesterday and hit the brakes after hitting the gas from a dead stop and the brake felt like it was stuck so I jammed it down and it worked. This happened more than once but under normal driving conditions has been fine. I'm just worried someone's work was not optimal and the hose may be to blame? Is there any way to check without completely tearing my truck apart?