Not a difficult task to replace ignitor - I took couple pictures but do not feel they are needed.
0. Unplug the smoker!
1. Take out grates, tray, burner cover, burn pot
2. Undo 6 bolts holding bottom plate under the ignitor and remove the plate
3. Tim sent a hex wrench with the new ignitor. Use it to loosen set screw on the bottom of the clamp ring holding old ignitor in place.
4. Undo plastic plug marked in purple from the control board and gently pull out the old ignitor through the side hole near the fan.
5. Feed the new ignitor though the hole - wires are stiff enough to push it through.
6. Old ignitor was sticking out 1.25 inches past the auger tube. New one is marked in blue to stick out only .75 inches - I double checked with Tim to be sure.
7. Tighten the hex screw in the clamp ring. Try the burn pot to make sure ignitor is centered though the corresponding hole. Plug the ignitor back to the control board.
8. Re-install the bottom plate - couple screws came out at an angle - must be a bit of warpage from the heat. Just be careful not to cross thread them - use patience.
9. Re-install all the remaining pieces, plug in and smoke away!
10. No more popping breaker!
I also got a WIFI module, will try to install tonight or tomorrow.