I’ll take the contrary view that you should go ahead and invite a knowledgeable person into your home to check out the whole setup. While he’s there, pick his brain; make him teach you. One good reason to take this route is you may have some other glitch in your vinyl chain that might take months or more to figure out, if you deny yourself the benefit of another pair of eyes, not to mention a skilled pair of hands. Two caveats: (1) this must be done in your home, not at his place of work, and (2) make certain that the expert you choose is really an expert. Examine credentials.
This should resolve your quandAry.
A small adjustment to AS ought not to have the profound effect you report.