Couple of things....
First off, the "battery rattle". With my
mod, I notice that there is a slight rattle of the battery at the top of the
mod. It is not that bad, or even noticeable really. I know that I could solve it with a small piece of tape on the battery, but will not bother, as it has no effect on the operation of the mod nor me. I had a "gripper" that the 510 connection would wiggle back and forth tremendously. I know of some people that filled it up with silicon cause it wiggled so much. The
slight rattle is not a problem, nor will it ever be. I know that in some flashlights, they put a piece of stiff cardboard in the tube to prevent that very thing as well. So, my recommendation on that is to not worry about it.
Secondly, the subject of replacing the magnets on the bottom with screws. Once again, I prefer it the way that it is. I find it much more convenient to swap the battery from the bottom of the mod. If I had to take out screws to do that, I would lose some convenience. I actually think that the
magnets are much more cooler anyway. I like the fact that I can totally disassemble the mod without the use of tools. I did notice that there is much more
throw to the fire button, but that took maybe 2 minutes to get used to. Again, it was not enough of an inconvienence for me to go through the effort of adding the spacers for the switch.
My vote for both ideas for improvement are to leave things as they are. I am exceedingly happy with the operation of my mod, and see no reason to
improve it.