The last two night my wife has complained that the pressure drops very very low while in the shower. I checked my gauge when it was low and the pressure was at 35 and even dropped to 30 before the well kicked on. It is a 40/60 switch. Not sure how old it is, maybe 10 years. It shuts off at 60psi with no problem. Does this sound like a pressure switch issue? Doesnt seem to do it all the time, but the last few nights when using the shower it certainly did. I verified by turning on a water hose and watching the pressure drop to 30-35 before it kicked on.