I was trying to get our jetted tub back in operational order when I noticed it was leaking. After cutting a hole in the wall in the other room, I traced the leak back to a tube that was not properly sealed. The tubing used is some sort of soft but very stiff PVC tubing. It appears to have silicone calking or something similar all around holding it in. Ideally, I'd like to take it out and clean it up and put a better layer down, but I am finding it very hard to get it out. Are there any tricks to loosening or this up? Perhaps a tool made for sticking down inside the crack and cutting the silicone?
I've tried to cut with a hobby knife and pulled out as much as I could with needle nose pliers, but it still won't come out.