Hey sorry to hear yours has a deformity. If you send us a photo of this we'll get you a replacement in the post, it should have a flat bottom to sit stable on a table with very little to no wobble, if it doesn't it should either be discounted or replaced so please do let me know! If there's a lump in the 14mm joint this would also warrant a replacement, no need to live with faulty kit when you can have it as a spare :)