Do you rebuild your OCCs? Degree of difficulty..?
Once I sussed out what was good for me its well good. Can be a tad hard depending on your building experience.
What I would do is 26 gauge 3mm 5.5 wraps.
Make sure the head is clean on the inside , for whatever reason I found the heads with a red grommet to have a better taste than the ones with the white grommet.
Take the pin and grommet out and put your coil through the top then use a drill bit or something that will fit ( I use a 2.5mm drill bit) to go through the head and through your coil then out the other side.
Put the grommet back on with one of the wires gong through the middle of the grommet and the other wire on the outside.
try to keep the coil in the centre , you want the coil to be about the size of the opening top hole on the head. My 5.5 wraps were slightly spaced.
Push grommet in then bend both the wires to the outside.( well one wire will sort of be going forward and the other back so bend them in the direction they want to go but so they are out of the way - as long as coil stays in place nice and straight once all is done and you take the drill bit out). Then put the pin in securely, trying to make sure the coil stays centred.
Then you cut off the excess wire as close as you can. Then take out the drill bit gently. then put the coil back into the base it should fit in with no wire stopping it. Then check the resistance on an ohm meter and make sure there are no shorts. Mine were about 1-1.2Ω.
Will be slightly more than usual due to the longer leg lengths.
Then I get some koh gen do organic cotton which I have peeled off the outer two layers. Cut a strip 12 - 15mm wide, twist an end and thread it through the coil head , coil then out the other side. It is tight through the coil so go slowly. Then cut each end of the cotton 2mm from the side of the coil head, then fluff up the tuffs and get something pointy and gently fold and push the ends inside the coil head.
Do this both sides scraping from outside the holes on the coil head to the inside. When your done and look at the coil from the top you should see the coil with two smallish bulges between the ends of the coil and the inside of the coil head.
You want it all to be straight , hole on side of coil head then light bulge then coil then slight bulge then hole on inside of coil.
Then put some juice through the top onto the coil and some juice on each wick end in the holes on the sides of the coil head.
Go check everything is good on an ohm meter or a mod. Then put the tank back together , can wait a minute or so and then vape.
This way for me has been very good for me.
I tried Rips way in the video above and it lasted 5 minutes before it went bad.