That's not helpful at all.
It's not pretty, but it's the truth and he may as well know it. Sooner or later, that's what he will do. That's what almost everyone does.
Go ahead and look through this forum. Find the people who are happily using their eGo-Cs with the stock tank system. Now, notice how long they've had them.
Then look for posts from people who have been using them for a long time, more than a few months, and are happy with them. Notice that they talk about having replaced the tank system with a clearomizer.
You'll be hard pressed to find anyone who used an eGo-C with it's tank system for the life of the battery. I'm sure those people are out there, but they are a small minority. By the time they typical user has used his starter set of atomizers, he's ready to ditch that tank system and fit his eGo with a proper juice delivery system.
I have made that statement dozens of times and, not once, has any eGo-C user come forth and claim they've used the tank system, exclusively or predominately, for more than the first few months or however long their atomizers held out. Of course now, someone will come forward, but there are always exceptions to the rule.
The O.P. can do it now, or he can continue to struggle with it and do it later. I'm just giving him the chance to save a bunch of time and frustration. A couple of $5 clearomizers can fix every problem that the eGo-C is plagued with. For the stubborn and masochistic types, they can keep on fighting it. Others may appreciate knowing that there is an alternative.