I’ve got an 86 ram50 2wd. Today, the power steering suddenly stopped working. It’s got plenty of fluid, and I pulled the return line off of the reservoir and it seems to be flowing fluid when running. There are no weird noises or whines. What should I check next? The steering box was replaced with a remanufactured item last year, along with all the lines. That makes me a little suspicious that it’s a bad reman. Thoughts?