I have a kayfun lite have not had any problems with it. But ordered my girlfriend a tobeco kayfun lite clone. It worked fine for 2 days and then she told me that it tasted nasty and burnt. I took it apart and the positive post block had turned and shorted on the negative block. i straightened the block and tightened down the post with a little extra torque. I switched her just in case it happened again. I replaced the cotton and i have been using it hassle free. Is this something i should be concerned about or did i just not tighten down the post well enough?