'66 Barracuda front end rebuild

How do those adjuster threads look? They are a biotch to move if they’ve been sitting in the same place for a long time. Repeated pre soaking is a must, followed by some heat, and maybe a long breaker bar an leverage. I hasten to use an impact, but may suggest it for the concussion action, it may help. Tapping not so gently on the head of the bolt with a hammer may help too. Patience grasshopper, is a must here, or a torch and new bolt and thread plate may be in your future!