Igniters don't ignite

Have the same problem with the igniter not working on the front right Max. I find that when I press the knob in on the top while it is in the LITE position the igniter works a little better. So it is not the igniter but the knob that is the problem. Have the same problem with the igniter not working on the front right Max. I find that when I press the knob in on the top while it is in the LITE position the igniter works a little better. So it is not the igniter but the knob that is the problem.

I have a GE profile gas stove about 5 years old about a year ago the sparker for the Max front burner just stopped working and must be ignited with a match, now a year later the other front burner the sparker has stopped working, now only the sparkers on the two rear burners work. I found that when i turn on the gas all sparkers that still work spark but not the front two. If I light the two front burners with a match and then adjust controls to spark then while the gas is burning I can see a spark from the sparkers but without the gas being lite with a match there is no spark, what is wrong? I have a GE profile gas stove about 5 years old about a year ago the sparker for the Max front burner just stopped working and must be ignited with a match, now a year later the other front burner the sparker has stopped working, now only the sparkers on the two rear burners work. I found that when i turn on the gas all sparkers that still work spark but not the front two. If I light the two front burners with a match and then adjust controls to spark then while the gas is burning I can see a spark from the sparkers but without the gas being lite with a match there is no spark, what is wrong?