The well servie guy, Greg, fixed the problem today! He replaced the switch, and now it will turn itself on at 30psi, pump up to 50 psi. He told me it should never go below 20 before turning on, and yet it was dropping to 0 as of late. He informed me there was a diaphram in the swith, and it had water in it so he figured it had a leak and that's what was causing my problems. And to top it off it cost me $84 ($59 for the service call, $26 for the switch). So all in all, I am happy that this situtation if finally resolved... so far as I know, and thank you all for your suggestions.