Can't use tubes in Weld Wheels Draglites?

If i had to guess, i would say that the valve stem drilling location in the drag lite might not be compatible with the tubes you have.
I have some centerline auto drag 15x12 that had an extra valve stem hole drilled in them for that reason.

Yup,
Goodyears on mine, but two valvestems in my Draglites too. The tube needs to lay in there naturally.