Hi all. Has anyone had any experience with nuway tablets for cleaning well screens? I think that my screen may be plugged. I have a new 30/50 switch and a new 1 hp AO Smith motor on a Flint and Walling pump. Pump is 17 years old. 63 foot deep, 2 inch well. Pump takes 2 minutes to go from 30 to 40 psi, then up to 5 minutes to get to 44 psi. Does that sound like a clogged screen? How much should it cost to have it replaced?