What I don't get is how Wismec can be essentially the same company as Eleaf, there are no problems with Eleaf 510s, and yet Wismec can't (or won't) use the same 510s as Eleaf. How hard can it be? They have a working model within the same umbrella company structure.
They are actually both joytech subsidiaries and cuboids had the same issues as the RX 510's. If you do a google you will also find enough people who had the sunken 510 pins on the ELeaf isticks, it's just more likely that people were putting bigger bulkier atties on the cuboids and rx's.