Many people find that 95 degrees is way too hot, especially if they start piling on each other. I did. My chicks became lethargic, flopped down, and started cooking, too weak to move away from the heat. Try 90. Use thermometer. The idea that they all are able to move away from too much heat presumes a healthy active chick to begin with. Good luck.
Agreed. My chicks always are the happiest at 85-90.