well I sized my insulators up and they are identical
just dont push them in to far & and same with center pin
biggest deal for me is they Slip In waaaay easier
just the slang all the cool kids call them flavor wicks
I consider them storage and isolators and no secret
I just only use yarn twist it up and thread it into coil
then lay what I think will work over top so no shorts
(I've even let one side very long and just folded it back over and click chimney on)
lot of heavy thick wick for thin juices and a topper with good draw;
thick juice and/or tight draw, just enuff wick to protect
bonus material:
have one of those circuit board spacers in my MVP (2-3weeks)
what a big diff all my toppers that required a little xtra love to connect
no longer require any at all great idea - them those are...
To each their own but i will never understand why you would go with one of those since it's something that you could easily lose over a simple adapter or the easiest and most effective of all, " the o ring " imo of course.