I have a drilled well with a 4" casing at 96' deep. In 2002 I put a new pump. Two weeks ago I started having water problems again. Today I raised the pump enough to drop a line down the well to see if it was dry. It shows that I have 43 ft of water in the casing. When I fill the casing with water I can get it to pump for so long then it will just quit. I then drop a string down it and it still shows there is 43 ft of water. So do you recommend a new pump, and if so who makes a 3 inch pump. In 2002 we put in a 4 inch pump and we had a lot of trouble getting to go down in the casing. Thanks, Steve