I just got my first DIY kit this weekend. 
I have no issues with mixing - cutting the nic w/ pg and adding flavor.
Using: 36mg nic juice 50%PG/ 50%VG
PG to dilute to desired nicotine strength
flavors from the 'One Stop DIY Shop'
used V4L cartomizers
I'm using old carts... just weren't producing vapor any more, but seemed like they would still work if they had juice.
I am using the condom method (depending on the cart, 15-25 drops, plus or minus, can fit into an empty cart) and the taryn spin to refill the carts and this is working just fine.... totally excited that i could do it btw!
Here's my issue: the refilled carts are vaping perfect after i refill them, however do not last nearly as long as the original cart did. I could vape a new cart for maybe 3 or 4 days, depending on usage pattern. The refilled carts are maybe lasting me a day (if that) with the same usage pattern.
Am i doing something wrong or is this normal?
Should I try something else that would make them last longer?
Is it just because I'm reusing carts?
I feel so lost, please help!
I think 1 cartomizer burned on the inside after i refilled and vaped it for almost a full day. after i refilled it, it vaped with a hot spot on the cart and this evening i was vaping it and tasted/ smelled nasty burned stuff - i chucked it, cause it was that nasty!

I have no issues with mixing - cutting the nic w/ pg and adding flavor.
Using: 36mg nic juice 50%PG/ 50%VG
PG to dilute to desired nicotine strength
flavors from the 'One Stop DIY Shop'
used V4L cartomizers
I'm using old carts... just weren't producing vapor any more, but seemed like they would still work if they had juice.
I am using the condom method (depending on the cart, 15-25 drops, plus or minus, can fit into an empty cart) and the taryn spin to refill the carts and this is working just fine.... totally excited that i could do it btw!
Here's my issue: the refilled carts are vaping perfect after i refill them, however do not last nearly as long as the original cart did. I could vape a new cart for maybe 3 or 4 days, depending on usage pattern. The refilled carts are maybe lasting me a day (if that) with the same usage pattern.
Am i doing something wrong or is this normal?
Should I try something else that would make them last longer?
Is it just because I'm reusing carts?
I feel so lost, please help!
I think 1 cartomizer burned on the inside after i refilled and vaped it for almost a full day. after i refilled it, it vaped with a hot spot on the cart and this evening i was vaping it and tasted/ smelled nasty burned stuff - i chucked it, cause it was that nasty!