In the fall I reopened my Chelsea Spa (closed it down in mid July and August – too hot outside) and noticed that one of the Jets no longer controlled the air mix. The Air is always on for that one seat location. The dial seems to do nothing. I brought this up in November when I was in your store and the salesperson told me it was $469 for someone just to come to my house to look at it. Not interested. When I was in your store again last week they brought my attention to your website. So here I am filling out a form.