While cleaning the ancient 20H that is the temp viv, the rim of the tank popped off and broke into pieces . I'm about to try weather strip under the lid to keep the flies in, but I do want to replace the rim so I can turn it into a vertical. I also have a 29 gallon that used to house my rats. That rim needs replacing as well, or I would have done a build on it instead of buying the zoo med.

1. Where in the world can I find new rims? Maybe some nice spinners... Buying a new tank isn't really an option right now as I've invested quite a bit into setting up the new Zoo Med viv.
2. What adhesive do I use? The manufacturer definitely didn't use silicone; it's a black, very sticky stuff that I can NOT seem to get off the glass.
3. How do I get the old sticky crud off the glass so that I can put new sticky crud on it?