From what I saw of the remains I would go with vertical 
I would suggest taking the carto back off battery for refilling. If you over fill that juice could get in the older non sealed leo batteries. That is going to be my complaint that you can see how much juice left in them. I top off @ least 10 drops every 4 hours just to be safe....
I killed one today. I put it on a battery to twist the black cap off and the battery fired on it's own when I screwed on the brand new carto and fried it. The battery was an older unsealed battery that I am going to throw away. It is lighting up on my desk right now as I type this so I am thinking there is e-liquid inside.
The cooked carto gives no vapor and only the burnt flavor.
I would definitely put a little liquid in through the bottom before screwing it onto a battery just in case I accidentally press the button while twisting the mouth piece off. You don't want to dry burn these at all.
Please dont throw that battery away...I have been looking for a dead Leo battery..I will gladly take it. I will pay to have it shipped to me
When you take the rubber top off you will see a black wire. That wire runs down to the coil. When I unscrewed the bottom brass center with the screwdriver slot that was a brass pin with a wire soldered to it that when I pulled it out was straight. I also found a lenght of hollow material with a wick in it and it was wrapped in a different material than polyfill. When all this was rmoved there was nothing buy the cylinder left with the threaded end. I would guess that the coil is vertical below the wick. Tommorrow I am going to take one to a machine shop friend and have it cut in half. If i do I will post the pictures
Thanks for pictures. Now that you have one apart. today after using one carto the vape dropped way off and draw became hard. I tried blowing thru battery end a few times this did not help. so I then ran a paper clip thru from battery end all the way thru it. It now works like new again even though I saw nothing come out. I do notice small black flakes of something (don't know what it is) inside the carto
Thanks for pictures. Now that you have one apart. today after using one carto the vape dropped way off and draw became hard. I tried blowing thru battery end a few times this did not help. so I then ran a paper clip thru from battery end all the way thru it. It now works like new again even though I saw nothing come out. I do notice small black flakes of something (don't know what it is) inside the carto
It is frustrating. Leo batteries are high quality and the cartos vape excellent. Think they need a little tweaking on the maufaucturing side. My first one which is in the pictures last 4 days of problem free awesome vaping before its death.Well that's disappointing. Are you saying after 1 day of use, your carto stopped working?
I just bought a Leo Batt and a few cartos, because the finicky Go-Go charger has put me off. I thought the build quality of the Leo is supposedly better.
The Go-Go cartos have been great. 14 days of refilling and constant use on one carto is more than I could ask for.
The pics of that dissected carto look nasty.
I would rather have battery issues than carto issues. I'm thinking I have buyers remorse.
It is frustrating. Leo batteries are high quality and the cartos vape excellent. Think they need a little tweaking on the maufaucturing side. My first one which is in the pictures last 4 days of problem free awesome vaping before its death.
A week would be nice but if it works awesome for 4 days that good enough for me.4 days isn't thaaaat bad I guess.