Hey all. I received my chi you clone mod today and I am using it with a VTC 4 2100 mah flat top battery. I researched the specs online and it said that these two are compatible. When fully assembled, there is a lot of rattling. I took out the smallest piece in the mod so I am using the main tube and the 2nd longest. The battery isn't making a connection with the positive post and the piston is virtually useless. I have tried everything to limit space inside, but I can only unscrew the top post so much before it no longer makes a connection with the rda. My atomizer is a IGO-W. I cannot unscrew the piston inside the button the increase its length. I am really running out of ideas, help would be greatly appreciated.