I've successfully modified one of my Protanks and a Protank2 to accept the Aspire BDC coil heads. I haven't done a Mini or Mini 2 yet, but they'll be exactly the same as the big tanks. I don't have anything against the Aspire tanks, but I have quite a few Protanks in my arsenal, and after trying the Aspire coils, I knew I wouldn't be using the Kanger coils any longer. The modifications weren't difficult at all, but it probably helps that I own a machine shop. If this thread generates any interest, I'll post pix.
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