Maybe you might asking this question in the Georgetown forum area.
I can't tell you for sure how easy it is to remove but my question is where is it leaking from?
From the over flow pipe?
From one of the connections to fill the tank?
It it possible you had water in it for the winter and cracked something?
I would think it would be very hard to have a priblem with the actual tank itself. Probably a damaged or loose fitting or pipe.
Have you started to exaime the leak yet?
Any pictures or more details would help.