Well I went & bought a new thermometer/hydrometer for my next hatch so I won't have the same problem with them. I put my new thermometer in the bator while keeping my old one in there. An hour later I went & checked them out, my old thermometer read 100F like it did the entire incubation & my new one read 90F!!! I turned the knob to increase the temperature & sure enough the old one read 105F, the new one 95F! I'm surprised my poor chicks even developed as much as they did & now I know why at day 26 they were still a good week from being ready to hatch... leason learned, check your thermometer/hydrometer before every hatch!