Does your 2400 have the automatic oiler? It could be that it just needs cleaned and oiled but generally speaking precisions machines are not made to operate in very cold temperatures. Parts shrink and the lubrication gets thick. I would try a good cleaning and lubrication and see how it goes. A small space heater might raise the temperature enough to make a big difference. I use one of those small 110V oil filled heaters in my small garage and it keeps things warm enough.