Still struggling

Started with the the Intellicig but eventually had to give that up because of the almost continual leaks in my mouth.
Played about with the intellicig and a new Titan 510 for a while then gave them both up for 3-4 month.
Picked them up again recently and started really really Really liking the 510 (especially when I found the Red Bull and Vanilla juice!) then disaster.....
was getting fed up having to fill the cart all the time and too lazy to do dripping all day so started experimenting with the paperclip and straw methods this week. For the first few carts both worked fantastic! Flavour, vapour and cart time was amazing but after only having 2 of each carts being a success I got a horrible burnt taste and leaking (never had that with the 510 before). The burnt taste was almost continual and nothing I've been able to do has shifted it.
This week I've checked almost every troubleshooting atty problem on this site, gone through 3 new atomisers and gone back to filling up my carts normally but still seem to be having problems with my 510 -so I know I've killed it-sob! Lacking vapes, flavour and still get odd burnt/empty taste.
I think maybe I seriously need to change the way I vape. It's poslsible that I've turned into a greedy little e-juice pig - trying to suck up all the juice in one hit so letting it go dry too quickly or else I'm not letting it rest enough?
Ending on a good note:
My Tornado/Ego came today!!! Having a few teething problems with it (tiny burnt taste and continual cart filling-arrgh!!grrr!!) but hoping that I'll have it sussed this weekend.
New juices from another company should be here next week too so I'm ready to try and crack this
