Hey I took my 510 cart and I popped off the end cap and notice there wan another end peice so I took some hobby scissors and cut the extra bit off it was like a cm or so then sanded it a lil to smooth out the edges and now when I vape it the vapor is warmer and has a slightly stronger flavor and u don't have any extra vapor condensing in that extra space so try it out and let me kno eat u think I'm goin to try to make a video on this sometime soon it's AZvapes on YouTube I don't have any videos up yet but hopefully I will soon