Congratulations on your new BP. I think he just needs a little more time to settle in. He's eating well so that's a good sign. How are you measuring your temps? Two UTHs and an overhead heat bulb seems like a lot. I'd suggest investing in a temp gun to make sure you're getting the most accurate temperature readings. As far as the defensive striking I'd advise using a snake hook before removing the snake from it's enclosure. It's just a gentle reminder that there's no food coming and let's the snake know it's handling or cage maintenance time. You can also use a gloved hand to take the snake out and then take off the glove when the snake calms down. And even if he does tag you it won't hurt and the snake will eventually see that biting does no good. Hopefully in time you'll both gain more trust in each other and the defensive biting will stop.