RTV works for the most part. I'd use gray(Permatex Ultra Gray) next time as it bites much better and is more flexible.
Coat the tire beads with tire sealant from Napa, it's black, in a can with application brush. Glues the beads to the rim for a no leak setup and actually dries unlike the white goo most tire places use. Just get the tire mounted to the rim first, then apply, then seat the beads/fill with air. Works great.
I miss the fiddy up at KTA. I had that thing setup nice for Pete's kids
