[redpoint5]

I have twice torn into my Prius to repair a water leak at the joint of the firewall and front end. The previous time I just missed a section of the seam and water was still infiltrating the cabin.

This time, I hit the seam well with silicone sealant, and after the downpour today, not a drop of water made it inside.

The problem is that the sealant was way expired, and is failing to cure. A day later, it's nearly the same consistency as when I applied it.

I don't think I could clean it out and reapply new stuff due to how difficult it is to get to. I had to use a straw to apply it in an impossible spot to get to.

Any suggestions? Should I just put everything back together and hope it doesn't spring another leak? My fear is that once I hit the highway, air pressure will create a hole in the goop.