so i got this unit for xmas http://www.purewaterclub.com/ its the six stage 0ppm unit. i have everything hooked up and hardly any water. nothing more than a little dripple. i checked the pressure of the house and im at 60psi right where i suppose to be. after troubleshooting the unit works great with no ro membrane in it. as soon as the ro membrane goes in its stops working. Do ro membranes go bad? or could i have just gotten a bad unit. any idea?