Our incubator just won't hold a steady temp. It has gone to 102 several times, 105 once and even 116 degrees. Is there any chance that we will still get chicks? It's a "little Giant" still air. Could someone recommend a good incubator? Are hovobators any better? How about a GQF model 1266? Is it okay to buy used? If I buy a cabinet model how do I handle lock down and hatching time?