Building a BBQ island

I have a 1948 Tappan 60 CP gas stove, have had it 15 years, and finally trying to fix the burner that never lights. It's partner lights fine, and I've adjusted the flame height so it can light--but only with the grate and cover removed. Put them back, and it sits there. Curious! Is it about air inflow do you think? It looks like the pipe into this burner is slightly off from how the others are set--it's set slightly back. I don't know how that would affect how it burns. Any thoughts for this puzzler? Many thanks!

Over the years the right front regular burner has been problematic to ignite. Often cleaning it would work but it was never that dirty or any different than the others which were not that sensitive. There was always gas coming through but the ignition spark would be weak or non-existent. Recently we got a repair person - an expert on Thermador - and he said that a trick to get that front burner to light is to turn the right back burner on simulataneously but that he would order a new right front switch and we were lucky it wasn't a new ignitor switch that was needed. Well his trick worked and after a week or so of having to turn on both right burners at the same time I was then able just to use the front right on its own. So I left a message for the repair person who was way overdue at coming back in any case telling him that it seemed to work without the work around. No answer from him but now it has gone back to me having to put both burners on to get the front one to work. I am hoping someone can tell me what I might need as he said that the repair to the switch was easy compared to having to take the top off etc in which case given the age of the range he would have to drill down the venturi tubes and then replace them. Do you think it is just a new switch (and is that below the front panel or not? Many thanks.