Be careful messing around with that screw. We have a teensy annoying leak which developed between that little adjustment screw and the brass nut. (Lower left corner of photo above, coming off manifold)
Took it to the Airstream dealer, and they said we need a new $625 stovetop. Nah, not interested.
We never used the pilot light anyway and I've stopped the leak with various things like, one night in an emergency when we needed to use heat but I was worried about the bitsy leak, candle wax....you laugh but it worked and we stayed warm and gas fume free. (although I was checking it with soapy water every 30 minutes or so!) Plumbers Goop has worked for a while, and next to try is JV Weld. Meantime, I've quite enjoyed telling hubby to turn off the gas, can't cook, got the little leak again. LOL
"Oh darn, honey, guess you'll just have to fire up the outdoor grill or we'll go out to eat."
Sometimes, about suppertime, I get out the Dawn and my little paintbrush and look like hell for that itsy leak..... If I shake it around a bit, doggone it, the little leak blows a teensy bubble again.
And it's off to Crackerbarrel or somewhere.....