Ivanator

Hi, I have a Nitty Gritty 1.5fi that has a leaking reservoir and was tryin to figure out how to get it apart so I can see what's wrong. Does the top part of the cover (the part with the fill hole and pump button) glued in, and if so, do you just pry it off the base? Or, is there some other way to get at it? Any suggestions would be greatly appreciated. Thanks, Ivanator