I actually like your syringe type thingy idea. It sounds simpler. Was that something you bought, or just thought to do?
I had just weaned a litter of bottle-fed kittens, so I was really really used to using this syringe. It didn't have a needle on the end, but a nipple. I cut the end so it had a decent sized hole, filled the syringe with glue, cut a small hole in the liner fabric, squeezed it up in there, then used my fingers to mush it around.
As I said, it looked awful, and I don't think I would do it that way again. If I were a great entrepreneur, I would have used that idea to invent a liner-replacing-glue-squirting device and sold it through my own late night infomercial. Oh well, you may take on that project with my blessing.
hwell: