Ok I wanted to get your opinion on my situation. I placed an order on evcigarettes and spent about 250 total on various vape ware. I believe the kayfun lite rta I received is defective. The screw on the negative post will not tighten to hold my coil to the base. I tried both screws in both posts and they both work on one but not the other. I explained this to the representative and they requested I send a photo or better yet make a short video of the problem at hand. I made a video and they agreed there was a problem. They asked that I disassemble the base and return just the negative post and screws for inspection at which point they would send a replacement if it wasn't considered unusually excessive use or improper use of the product. I requested they just send me a replacement part or that I would return the tank for a refund and purchase it elsewhere as well as reconsidering shopping on their site in the future at all. Do you think this is out of line? I made a clear case that right out of the box the post seemed defective. I read other users had similar issues with the kayfun lite clones where other vendors simply mailed out a replacement post or even in one case an entire new bases. Anyway I'm rambling a bit now but figured this would be a good place to get an opinion or perhaps there's some other obvious fix I'm missing. Thanks!