I was wondering if anyone knows how I could tighten up the lever on the economizer for my ribbon burner. It won't stay in the up position so I've had to attach a wire to it, which I use to wrap it around a little hook I made to hold the lever up. It works, but it is kinda a pain in the butt and I was hoping someone might know how I can fix it. The screw that is in the lever is already tightened as far as it will go. Any suggestions?