Time to replace the door gaskets. Do the glass gaskets at the same time. You should do the $$ test on the griddle and ash pan.
If you still have a full firebox of flame (once that done) when the stove is shut down, then a potential rebuild is in order.
Just my opinion
If you still have a full firebox of flame (once that done) when the stove is shut down, then a potential rebuild is in order.
Just my opinion