Soooo I would love to use my new reogrand however! I ordered a 510 addy with it, and I tried it out after of course trying one of the carto's I had already filled. They worked great, then it came to the addy, and boom, 1st fire, instant spring coil and nothing from the addy. Awesome, forgot to order replacement springs. Now the waiting game begins. Think he will replace the faulty addy? I just ordered more springs as to get them faster, I'll worry about the 8 dollars that crapy addy cost me later.