Cant find rear inner tube any where

[dannylightning]

no one seems to carry a 130-90-15 or a 5.00/5.10/15 tube for the rear tire. i did find one metzler tube that stated it could be used for a lot of different sizes including the one for the gz but it either had a side valve stem or a tr 87 90 degree valve stem. i called the place and asked about the valve stems and they told me if i have a regular valve stem on my bike neither of those valve stems will work.

i would image the Suzuki dealer could get them but i don't want to make a 40 min drive each way just to order a tube and halve to make the drive again to pick them up.