Can you download your camera pics to your computer? If so, you can just attach them by using the "attachments and other options," below the post text window. A picture or two would be worth a thousand words, in this case.
Have you tried reconnecting the power leads to the stock controller (bypassing the switch), and testing the temp with something in the smoker (bricks, or other suitable heat sink)? I'd isolate the switch first. I guess it's possible that it's limiting, or throttling, your power. Remove it from the equation and test. If that doesn't get the heat up, we can go from there with the next step.