I am in Alberta, Canada! I have thought of trying to upgrade the controller from the older Power Pilot, but I have no idea where to start in finding a suitable replacement. I know nothing about "control boxes with the big red plug". Can you elaborate? (Make, model, where you can get it (website)? Alternatively, I have no problem in making a project out of taking it apart my Power Pilot and replacing the ignition and additional parts that are worn (if they are available) considering it's almost 50 years old!! I just need directions for doing so.
As for the loose handle... I see that there is a main screw through the handle so I will just try tightening that up and see if it does the trick! But there is also a lot of play in the handle so other than being loose, I suspect things are worn out inside.