Can I first say that I love the Volt, so tiny but so much vapor and taste! I'm eyeing that lovely raspberry battery now....
So here is what I did. I emptied the Vanilla cartridge using that spin method, put in some glycerine, emptied it again and filled with Ms T's Bakery Snickerdoodle. Left it overnight just to make sure it's all soaked in. I also left the other 4 cartridges, topped up with glycerine, in an upright position all night.
This morning I added an aluminium drip tip mouth piece thingy to the Snickerdoodle cartridge, to try to make the vapor less warm. Although the vapor is already cooler (thanks for the tip to take a few fast draws first, when the vapor was too hot) it's still warmer than I prefer. Not the Volt's fault, it's just what I like best. The drip tip doesn't fit the cartridge, but I fixed them together with sticky tape. The Snickerdoodle is tasting delicious!
The other 4 cartridges are not so nice, the grape is the best of them. Once again not SI's fault, just my taste. At least they don't taste burned now, so I think that you were right and they needed to be topped up. It probably isn't a resistance problem, but maybe that's why my Go-go carts all taste burned.
Today I'll empty and refill the 4 cartridges, can't wait to try out different juices!
Once again thank you for all your help, and so fast too.
Tgirl