Sorry it took so long to get back, had quite a few crazy days.
I do not really know what to say, it has been covered so well by others already, so I will just finish up MY feelings and findings.
I have used the test cartos for over a week now.
Silver carto: Never had any luck
vaping this one on anything other than the 3.7 Anything over that and it tasted burned.
Black Carto: had better luck with this one, it worked well UP to 5V but worked better a little under, no burn taste at this voltage.
Problem I had with both was topping off, I had to top off often and when I did they would only accept about 10 drops of juices before they flooded, which means that there was more than a half of carto of
juice that is not being used.
I would love to see the 510's in the design of the other test cartos that we did a few weeks ago (XL 808's) I think those are amazing and headed in the right direction.
Ike, You are doing a wonderful job trying to find us the perfect
vape, PLEASE never give up, your brilliance shows through on the 808's you designed!!
Thank you for allowing me to test these for you and I look forward to the next test!