I know this thread is about helping a chick out of the egg, which I do on occasion. If you have to do it be careful and moisten the membrane with a wet Q-tip and stop if it starts to bleed. I also notice some folks advise to set the temp in the LG's to 102 if not using the optional fan kit. The instructions provided with the incubators state 99.5 and the thermometers have a line marked at that temp. I just try and maintain the temp somewhere between the two and keep the water troughs filled and usually get a decent hatch.