Hello, I’m Nathan, and I’ll be assisting you today. My livelihood depends on your positive feedback, so your satisfaction is my highest priority.
Sorry to hear you’re having trouble, Darryll.
I believe I may have been working with you before, but we were disconnected.
This is a very old and now obsolete system, so it isn't supported any longer in terms of new parts availability.
You can still find them used occasionally such as an amazon or ebay, and that is really the only option.
Beyond that, or if the problem continues, you would be better off replacing the entire system at that point, as it is well past its service life and would be expected to fail completely before long anyway. Should it come to that, I'd be happy to offer some replacement recommendations for you.