I won the mod as a raffle at a vapor club meet, but have thought about contacting the vendor that donated it to see if they could have better luck with the supplier. I have sent 2 emails to Sigelei and can't generate a response. They claim on their website to have a 1 year warranty on their products, but it doesn't seem they care about complaints.
The top looks as if it has a break in the construction, but haven't been able to get it to twist or pop loose.