So I've had gus for 3 weeks now and no signs of improvement. I he still scoots away and hisses at me when ever I go in his cage. I temps are fine and reptisun 10.0 uvb. Is he always gonna be like this? I should I return him for a more agreeable one? The ones at the store here are sooooo muh nicer and never snap when I try to pick them up.