youramericanlover, I'm not sure about the rim compatibility, but you could try a few ounces of sealant and filling the tires with nitrogen gas. Nitrogen is less likely to leak through the rubber.
Cylinders of oxygen-free nitrogen can be obtained from your regular industrial gas merchant. Pipe Centres definitely have them. It's a long way down the #tartmode route to be doing that though.
youramericanlover, I'm not sure about the rim compatibility, but you could try a few ounces of sealant and filling the tires with nitrogen gas. Nitrogen is less likely to leak through the rubber.