Hi all. First time poster here. Looking for a little help with my Jotul Firelight 12. It’s an older model I believe, with no access to the air control lever. Some models I see have a small plate with 2 screws to access the control, not mine. When I move the lever to adjust air flow I feel no resistance at all. I believe the lever has disconnected from the linkage? I’m having quite a bit of trouble burning the stove this year and I believe this is the culprit. Has anyone here had to work on this? I’ve searched the forum and can’t find any answers to this particular issue. Any help would be greatly appreciated. Have a great day.