I recommended my friend that tank and build for him too. Build quality and machining is indeed top notch. And regarded the cloud is almost on par with my dual coil build using the twisted kanthal. Regarded leaking issue. I took an advice from one of the member here or YouTube comments I forgot. During refill when you close the top cap. Close it until juice can't flow out then turn your tank upside down and tighten it. So far no complaints from my friend