Everything you told me, basking at 105 (I have the digital thermometer), reptisun 10.0, a hide, a repti hammock, fake cacti, as many crickets(small)that he can eat, dusted with calcium 5 days a week, vitamins the othr 2 days, fresh slad and water every day, daily bathes, I don't know what's wrong. He's probably just grumpy but he likes me.
You are doing everything great Felix (is that your name?)
Babies usually have stress marks. They are so small and the world is so big, everything is pretty intimidating to them.
Since your setup is good, and everything else, you don't need to worry about it
Stress marks can come from almost anything from something more to less like his food dish was moved 2 inches to the right and he was like "wait... huh? ... really? hhmmm."
If everything your doing is right and good then I wouldn't worry on it too much unless it is constant all the time every day. :wink: