Well First the snake is constipated and at this point may need VET care to help on this. Soaking in warm water may help relieve him to poop but may not.
Also the scars look healed over but also from either rodent bites or from constant rubbing on the back on hard surface.
Also you need to get a digital thermometer the stickon ones just read the glass temps, you need the temps to be ground level as thats where they spend 99% of thier time
78-80 cool side and a 88-92 warm side