Yeah guess I sort of rambled on there didn't, sorry about that. I'm really wanting to know if its possible the change in diet is what is making him stay hidden or if its just a coincidence.
Anyway, I don't know how old he is or how much he weighs (really don't know if its a he or she). I got him from a small local petstore and the idiot kid had no clue about him. He looked unhappy there so had to come home with me. But that's another story.
He is around 28 inches long (as best I could measure) and at his widest is about 5" in circumference. All the care sheets I read said feed about the size they are at the widest and the rat is definitely smaller around than he is.
I was feeding him the mouse every 5 days. Then he missed a feeding while I was on vacation.