60 ft washed down pvc well 2" casing with 4 ft screenpoint. Well was done by a small professional outfit 2 years ago. It has a 1hp topside shallow pump and pressure switch cheapo pump ever biltmore and has provided water for our household for 2 years without fail. We left water pumping to our livestock water bucket on low while we were gone to work all day and night. 12 hours later got home to no water and well pump just a running but no water from anywhere. Unplugged pump and let cool reprimed pump and tried again it pumps the couple of gallons we primed with then goes dry. I also noticed pump seems to whine or squeel time to time like bearings are going bad. Hooked up another old 1hp pump bypassing pressure tank and primed and ran that pump with the same troubles. System is using a 1 1/4 check valve and i fear that it may have gotten stuck shut with sediment possibly? My plan b is to drop a 1 inch dropping down 50 foot or so and reprised and hook back up with a in cased foot valve instead of top side check valve. If I do a drop pipe 1 inch with a footvalve must I seal the gap between the 2inchvcasing cap,/reducer and the 1 inch drop pipe stuck down thru it into well casing?Static water over the years usually seemed to be between 8 and 15 ft deep however we have been in a drought.... were in nwfl panhandle. Any help greatly appreciated.