So It's been just about a year, and I discovered this after I wasn't getting the usual response from my 4 rack today. Fortunately, no expensive meat was lost as it was just stuffed peppers and some sausage (all edible)

As you can see just over 100 after about 30mins

I guess it's time for a replacement element, i'm just trying to source one locally before I order two (so I have a spare for next time) It doesn't sound difficult. I found this on the recipe site FAQ.
Bradley Smoker FAQ's - Answers
Submitted by: Brian
Q. How do I change the heating element?
A. Compliments of Brian; Bradley Tech.
Replacing the heat element is a fairly easy task.
Start by UNPLUGING THE SMOKER FROM THE WALL OUTLET.
Open the smoker door and remove the four Phillip's head screws (two in each side of the white porcelain insulators)
Take a good look as to how the wire guard and reflector are installed and remove them. If you have a digital camera take a picture of how it is assembled prior to removing them.
Gently pull the heat element out slightly about 1 inch or so (don't pull to far or you will pull the wires off the plug in the rear of the tower)
Remove the nut on each end of the heat element and remove the element. If you have a multimeter, after removing the heat element you can check it. If you get a reading of 27 - 32 OHMs, your heat element is good. If it is good, something else is causing the problem.
To install the new element reverse the above steps.
BE CAREFULL WHEN TIGHTENING THE SCREWS ON THE INSULATORS THEY ONLY NEED TO BE SNUG.
If your new element does not work double check that you didn't pull a wire off the back plug.
I don't own a multi meter so hopefully this works. If anyone has anything to add I'm all ears. Thanks!