Thanks for posting a picture, looks pretty good! Normally I'd say if a hide seems too big, then to fill up some of the space with substrate or moss to make it more snug, but honestly if he seems happy with it, it's probably fine to just leave it as it is. The combination hide and water reservoir is pretty nifty, nice find! I'm glad you've been getting better results with your temperatures and humidity. The only stuff I can't comment on, since it's not visible in the photo, is the setup for the heating elements (heat pad, lamp, thermostat) and the measurement devices (thermometer, hygrometer), so if you've made changes to any of those and want to touch base for more feedback, feel free to fill us in on those updates!