FYI: I'll be doing a review and a How TO Rebuild the New GoGO Dual Coil Cartomizers in a new thread shortly as soon as I find my camera.
First off, the GGDCC's hit exceptionally well and is an exceptional product for the GOGo.
Yes, you can disassemble them completely, clean the filler AND(this is important) DRY BURN THE DUAL COILS!!!! You can reassemble them with little effort and they are essentially factory new, and good to go. I've done one but I didn't have a camera. As soon as I find my camera and another one gets tight on the draw, I'll do a picture tutorial of the entire process.
Oh, these do crack easily if any torque is applied to them like dropping them and they land on the carto at an angle. But the fix is very easy. Just gently pull the clear plastic tube off the base while it's screwed on to the battery. Turn it around and reinsert it over the filler and on the base with the cracked end at the lip end. Works like a charm.