Hi all, thanks for all the helpful info here. I too ordered a VAMO SS. I got it yesterday. I used it all afternoon, and I noticed the warm end cap on mine. That lead me here where I see others have had the same problem. I contacted Eric @ DV. He said he knew of this issue on the chrome models, but had contacted his supplier. Eric said he was assured the SS steel models had the spring upgrade. After an email or two it was apparent that I had one of the "faulty" springs. Mine was silver in color. The new one is more gold. Eric apologized, but it really isn't his fault. He offered to make it right, but for now I'm good. Here is what I did
I had an old maglite AA flashlight here on my desk. I took the spring out of it, and inserted it in the center of the original spring( two springs). It just "floats" in the center of the original spring.This took care of the issue. Fires instantly, and the end cap no longer gets hot. Another benefit to this was no more battery rattle (flat top 18650), and the end cap tightened up all the way without too much spring pressure. I wanted to post this in case somebody else like me wanted a quick and easy solution. Obviously, the spring I got with this VAMO is made of an alloy that has enough resistance to create a voltage drop across it (thus the heat), and the maglite flash light spring is of much better quality (little to no resistance). The reason it works like this ( both springs together ) is electricity will always take the path of least resistance. While this may not be a "perfect" solution it works well for me. Even attaching the end cap horizontally works as the original spring lines the other one up. Hopes this helps.
I will say that my experience with DV was excellent. This was my first purchase there, but not my last. Eric's response was very quick, and I can tell he really cares