Hell yes! Make sure those batteries are pointed down, the additional head pressure makes the electrons flow stronger....trust me it works! Send me a $1 and I will mail the instructions!! LoL
BTW, pretty funny, but the spring actually worked out well. Even funnier was I was sitting here trying to squeeze the spring a little tighter and my wife was like why don't you use a pen spring. Nah, that won't be strong enough...lol. Check out the pen spring in the pic. I really didn't need it, I don't adjust that much, but just wanted to try it. FYI, I didn't use a lock nut or set up the position, was just testing the spring. Really you could almost just set the brass rod side and use the spring tension of the terminal lug to do the same thing. I was just curious if it could hold tension to get a good vape and I tried it at various positions. You would need a lock nut for it to stay in position while you turned the screw from the outside. I was board...lol.
Now what did work well and did create a noticeable difference in my vape. When I installed the Peko parts, I was in a hurry to have a working Peko and meant to go back and clean those grimy brass rods I received. Like most things now days, I forgot. So was taking it apart tonight to play with the spring and use my DeOxIt on the brass rod and nuts. Bright and shiny compared to what they looked like and it is a much stronger vape. So before replacing stuff, give a try cleaning it instead!
Damn, I really need these instructions, do you take Green Stamps?
. I assumed it is positive end down just because it goes to the center pin of the atty. Again IS THAT CORRECT? 
