I inquired about these solid design caps from David a couple of days back. Here is why.
1) The current two-piece design top cap is designed to work with the adjustable draw system. However, this system must have a standard atomizer width to be useful. I don't ever use cartos or standard atomizers so therefore the adjustable draw is not useful for me.
Note: The current two-piece design does allow for adequate airflow for devices that draws air from the 510 connection. This is accomplished by having the center of the top cap slightly raised to allow airflow underneath.
2) Currently, when I want to remove my top cap for adjustments I often find that the decorative ring on the top unscrews first. I then have to grab the top cap by the exposed threads in order to remove it from the mod. A one piece top cap eliminates this issue making for quicker easier adjustments to the 510 center pin.
3) Lastly, the simplified design might help keep costs down for future ELA runs by eliminating the adjustable draw feature for those that will not or do not plan on using it.
Do you need it? Well, that's a question only you can answer!
Also, the solid top cap should allow a truly flush fit with RBA, etc. though the gap is very small with the current design.
Exactly what I was thinking. Thanks for the confirmation!