How can I check if the wastegate is working? Can they get stuck? I was testing out the truck and it kept overboosting when it was suppost to be set at 12lbs, I would see 16 and even 19lbs of boost and the truck would bog down and backfire or make a poping sound. Checked that line that goes to the wastegate to the intake elbow and it seem fine. What should I check for?