This is concerning "Genuine JOYE Tech" all plastic cartos. Even though folks want to be helpful, please dont post info on soft tops as I already know how to refill those. 
Now on to my problem: Even though they are advertised as holding 1ml, I seem only to get less than half of one mil (before running over or out the end) or approx 4-5 drops for each refill.
I have taken off the plastic end cap, removed the inner cap and punctured the fill hole and fill them with a srynge for accuracy.
I love these things, as well or better than soft tops, but I hate not being able see or know just how much juice is left inside. I wait till they seem to lose flavor, but are still making vapor (and before they taste burnt) to top them off, but can only get in the small amount above.
I have watched several you-tube videos but have not found the information I'm seeking. What am I doing wrong? Or am I just refilling to soon?
How do I know on these when to refill? They are very different than the soft top cartos I am used to.
Thank you!
Now on to my problem: Even though they are advertised as holding 1ml, I seem only to get less than half of one mil (before running over or out the end) or approx 4-5 drops for each refill.
I love these things, as well or better than soft tops, but I hate not being able see or know just how much juice is left inside. I wait till they seem to lose flavor, but are still making vapor (and before they taste burnt) to top them off, but can only get in the small amount above.
I have watched several you-tube videos but have not found the information I'm seeking. What am I doing wrong? Or am I just refilling to soon?
Thank you!
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