Got my first set up and the joye 510 sr attys in the mail yesterday. I debridged 2 of the attys, killed one by cranking it up to 6 volts

2 bucks down the drain.
I am having fun experimenting

)
You debridged them to start? Uh oh, D2 is lurking! LOL. No, but seriously, I get experimenting, but there isn't really a need to debridge an atty in the beginning (and some, ahem, would say there is no need, ever! LOL) Welp, at only 2 bucks a pop, have at it!
First, considering you must have a VV, you should start it out a little easy and break it in. I begin with 4.2v and incrementally, over the course of 24 grs, go up to 4.8 and then after the atty has proved itself worthy, I take it to 4.9 and maybe 5v if it is the Secretariat of Joyes. hahaha. I never go to 5v to begin with because for 1) that's too much on a new atty (IMO) and for 2) it won't taste right.
Check out a link I posted in this thread for Ocelot's methods of handling an atty. I think it is a good read.