I really find it odd that people are trying to find a way to continue using a device that clearly has thermal issues, instead of just using the many out there that don't have melting problems. Not only does the top cap melt/deform, but the main body can/will crack. Unless this is the only vape you own, I just can't see that it is worth the hassle. Buying another companies top cap just so you can use a vape that melts the original cap? Madness I tell you!
Because it fullfills a critical market point of per degree heating, replaceable batteries and low cost? I can buy 3 Alternates for the same cost as an Arizer Air or similar. Sure its not my only vape nor daily driver but you can't deny people's attraction to it.