I took Tarzan to the vet on Wednesday.
Vet was unsure to exactly what it was, definately not a sheding problem and not due to humidity or scale rot, quite unusual actually probably a burn of some type not from direct contact with the heat light more like sunburn or something??
Anyways I was instructed to soke him in water (30*c) for a few hours to try and to get him to shed again. He stressed out a bit being in the water even with a stick to climb on so i took him out after about half hour.
When i got home from work last night he was shedding
he needed some help from me to get the last of his tail off but his scales are brand new and completely undamaged after the shed
Im so glad!!
He seems happy enough again, im going to get him a new enclosure built so that i can regulate the temperature better for him in future
Big thanks to everyones input and interest