ro/di unit questions

I just purchased a new 90gpd unit from spectrapure to replace my old unit with bad filters putting out 30tds. I thought it would save me some headache and since I have been running it for around 6 years it would be nice to have a new one. Since installation last week I have had nothing but trouble currently sitting at 130tds and I cant get the waste water to shut down with the auto shut off. I feel maybe there is a water pressure issue but I didnt have it with my old unit. I have gone through the spectrapure troubleshooting procedures and am to the point of just wanting to find someone who knows what they are doing to come figure things out. Does anyone know of a buisness in the layton ogden area who installs ro units.