Have you pulled the burner and gas tube out and attempted to re-seat it? There are 2 little posts on the bottom of the burner that sit in a notches in the bracket. Maybe one isn't seated properly?

Man, I remember when mine looked that new........ won't last long :)

The burner head assembly (head, igniter, and venturi tube) can be pulled out for cleaning and servicing. It is not unusual for it to shift during shipping. It can also be wedged into the range without properly sitting on the jets. The installer should have tested this. But not all installers are that thorough.

Fortunately, it is something that the owner can easily fix. And in fact, it's something you probably will end up doing every so often when you give your stove a more serious deep cleaning. Pull out the grates. Once they are gone, the burner head assembly pulls out easily. Take it out complete and then reinsert it. Make sure that the hole at the end of the venturi tube goes back over the brass jet. You should be able to feel when it is securely in place.

Then drop the burner head down onto its stainless steel bracket. It should lock into place. If it doesn't, just wiggle it a little bit. Put the grates back, and then verify that the burner operates correctly. The first time round, it might take a few seconds longer to ignite.

If you have trouble with ignition, make sure the igniter is fully plugged into the igniter cable, and move the cables so they aren't pinched and don't touch metal parts. If necessary, used zip ties (if your installer hasn't already done so).

You might discover that the burner head isn't perfectly centered inside of the grate. Small differences (even up to about 1/4") don't actually matter much. But if it bothers you, the bracket that holds the burner head can be adjusted by loosening the four screws that hold it in place.

As for @Mistman's comment, I agree and a Bluestar stove will quickly develop a natural patina. In fact, many people rub the grates with a little oil and then leave them in the oven during initial burn in. That way, you get a uniform patina quickly. But if you ever want to restore them to look (almost) new, they can go into the dishwasher. I did that recently, when my contractors messed up the 8-year-old stove during remodel. I did reapply the pantina afterwards though.

Thank you, M and Mistman for your feedback. I have checked a couple times and the burner head assembly is properly attached to the jet, but the assembly still does not sit flat. Interestingly, the knob for this burner is also really tight and does not turn like the other knobs do. Is it possible that the jet itself is improperly seated or aligned? If so, is there any way to adjust this? Thanks again!

I believe the front panel that houses the knobs can be unscrewed and then you can probably adjust the positions of the valve by a small amount. But I'm not sure I'd recommend doing that. It's a bit difficult to disassemble and not something the homeowner is expected to do. Ask me how I know.

Also, adjustments will be limited, but it is certainly possible that the valve doesn't sit quite straight. You could probably use your cell phone to take a picture of the part where the gas comes out. Compare that with what it looks for the other burners that don't have this issue.

If it was out of warranty, I personally wouldn't hesitate to try fixing it myself. But since the range is so new, I'd just call a professional. It's likely easy to fix if you know what to do, but it could be labor intensive depending on what needs to be disassembled to gain access.