53 New Yorker valve stem leaking

[jcox04]

I purchased new tires for my New Yorker and had them installed with new valve stems (.625"). Discovered that stems were leaking and that stem holes in rim are oval. I am thinking best solution is to install inner tubes or are there valve stems that will seal the oval holes??? Did the car originally come with tubes? 

[austinsailor]

They make an oval stem, usually has a nut on a threaded stem. A good tire shop, or one in farm country should be able to help. You can get them online, too.  
Such as these on Amazon:

 

https://www.amazon.com/Milton-476-Oval-Tubeless-Valve/dp/B001O2ZTSQ/ref=sr_1_1?s=automotive&ie=UTF8&qid=1523047470&sr=1-1&keywords=oval+valve+stem&dpID=41xIDb%2BT2PL&preST=_SY300_QL70_&dpSrc=srch

[jcox04]

Thanks for the help