Originally Posted by MinnMan

Here is where I am in my continuing adventure to figure out Tubeless.

To review, I have a set of Mavic Cosmic Pro UST with Yksion tires that arrived with my new bike. I didn't expect to set up tubeless right away, but the front tire went flat almost immediately and I found that it's much easier to mount the tires without a tube than with.

So, when I mounted the tires (w/o tube) and pumped up the front one, the beads seat, but then there is a leak from one of the spoke holes. On closer inspection, I can see that whomever put the wheels together (Canyon or Mavic?), had trouble with the rim tape because there is a piece of black tape placed over the normal rim tape in the vicinity of that particular spoke. There must be a perforation in the rim tape beneath it. The black tape looks well-placed to me, but obviously it is not gas-tight.

So, should I

1. just proceed with adding sealant, assuming that it will plug this hole?
2. Remove the black tape and try to seal whatever hole is in the rim tape with a better piece of tape?
3. Pull off all the rim tape and start again?

Advice requested.