I bought 10 of these with no problem with 510 thread.. I use my istick 50w and the threads are perfect.. My guess is you got the Persei thread by accident since the threads don't fit.. I had issue with there products and they compensated me for my time so give them a chance. I'm a business...
I just wanted to say thank you Gary for helping me out.. I really appreciate you making that unboxing video and doing a Skype session with me so I can understand the 8 better.. Your company customer service rocks!! Thanks w9tech
I will try that when I get home. I will be on skype tonight with Sam and see if he can try to help me again but if that does not work I will send it in. Thank you.