Squid, don't know if you got yours yet, but with the Boge 510 carto's, I had to clean out the carto that I was using for that Maiden Coffee after about 3 fills because the draw got hard. and it sucks because I probably waste about half a ML of juice because of it. Oh well, it still tastes real well. I also began adding some VG into it to try and relieve some lung burn and breathing issues I began to have from this last batch. so far it seems to help a bit, but it probably bunked it up even more due to how thick VG is. I was also dripping the VG into the cart with the flavor, which I figure isn't the best way to do it, but I just want to know if it's going to help my issues before I go ahead and dilute entire bottles of juice with it. It could technically just be withdrawals from quitting smoking or just old smoking wounds still present since I still smoke a couple a day. Anyway, just wanted to warn you that you will likely be cleaning out your carto's much more often when you use this flavor.