Easy fix, turn all flame off and polite off, Blow air in the little polite hole, next blow air in all the bricks be careful lots of dust will blow out, Next blow air right below the fire brick lots more dust will blow out. Then turn on and check stove. Last time I did this the owner called his wife to look at stove and said this is the best it has ran since new. Gas stove popping https://www.youtube.com/watch?v=iBUwB-DvHfU
On these type stoves some will need to pulled apart, you will see the screws at bottom of stove
and back of stove. When you have cover off, blow air in the tiny vent hole line where flame comes out.
next blow from back upwards and see if lots of duct blows out. What you are trying to do it get all
dirt, dust out of stove and polit light. When done put stove together and it should be good for a few
more years.