A word of warning about the replacement Nautilus base I received from evape. I am not convinced this is a authentic Aspire replacement. It didn't come in a box but rather a plastic zip-lock type bag. I assumed that was just done for ease of shipping at the time it was delivered. I received it quickly from evape and their service is excellent. I didn't try the new base until last night and I immediately noticed that the 510 pin is not spring loaded on mine. There does look to be a spring in there, but it isn't working the way it should. Also, the air control ring is very loose and does not have the same solid feel as the original. The final straw was the leakage; I let the tank sit full vertically all night after installing a new coil...yes it was all the way in there. Every drop of the juice leaked out through the air control hole overnight onto my desk. As a brand new base, the seals should be fine, but it leaks like a sieve. I'll try to see if perhaps the seal on the brand new coil was bad...I hope that is the case. Perhaps mine is just defective, but I think I'll go ahead and order one directly from Aspire next time just to be sure of its origin.