They're probably coiled up together because the one on top of the coil is claiming dominance, which would stress the other snake out. If you do not want to get two separate, smaller tanks (20 gallons or so) for each of them then maybe divide the 125 gallon tank in half and provide a lot of cover in each half as its a whole lot of room.
Sadly, it sounds like your temperatures are off and if there are eggs, then they're probably not in the best of shape at 60 degrees. The hot side of your enclosure should be around 90-95 degrees while the cool side should be 86-90 degrees.
Is it possible for you to post some pictures of your enclosure? I think you may want to take a peek at one of the many husbandry FAQs we have here.
