Do not force feed! Waaaay too early to even think about that. Are you sure your temps are accurate? The cheap analog guages are not accurate, you didn't mention how you were reading temps. I suggest covering the two sides and back with something dark, like black Con-Tact paper from Home Depot, it's only $6. It will help make him feel more secure. Also here is the caresheet, just look it over to be sure your husbandry is correct.
http://ball-pythons.net/forums/showt...ius)-Caresheet