I replaced a Pressure Gauge for my Sand Filter 4 months ago & every time it rains or in damp weather, condensation builds up under the Plastic Face Plate & it is very difficult to read. It clears up eventually, but it the PSI on the gauge is more invisible than visible most of the time. Did I buy a cheap gauge? Is there one I can buy that will never do this? I thought of sealing it with crazy glue, but have not tried that yet. I live in Florida, so it is very humid here. Thanks in advance.