Wismec Theorem RTA bottom

[Fonetik2003]

Okay so in order to get the main piece of this RTA tank out of the glass, I've had to use my needle nose pliers and tug on the 510 connection right? Well now the bottom is all misshapen and warped and it won't go into my mod because I guess I did that too many times. Will I need to replace the bottom of the tank and if so, where do I find something like that? Looking for help and advice here because I've already tried using my pliers to reshape the metal and I can't seem to get it right.