Grr.
I am having the same problems as you were having ( the screens never fit into my SGG wand snug and I would suck finely ground flowers through, plus finely ground flowers on the edges of the beveled ring weren't getting vaped) but I couldn't get the second screen to stay in my SGG wand. How are you putting it in? I must be missing something. I can get it to stay but it also flies out of my wand when I blow my AVB out.
But yeah, my screen does not fit snugly in my wand at all.
I'm using the stainless steel ones that came with my SSV.
I dome it with my thumb and the ball on my pick, and then I just insert it horizontally (dome pointing up), not vertically, and just press down on it with my index finger, slowly and carefully, making sure it stays perfectly horizontal and that all edges of the screen are going down at the same rate, and I just stop about an inch down. It's very snug, doesn't move, I can even tap on it with the pick (albeit gently), but you have to be very careful when scraping it with the pick, because if you press down too hard on one side it will flip. BTW, when I dome it, I make sure the outside of the screen is still a perfect circle, to make sure it makes a good seal against the wall of your wand.
Now this is how I expected the SSV to work, the way it's working now. A second screen at the end is the way to go, however these regular screens aren't ideal, because of the flipping issue. A screen more like what Tweak has would probably be better.
Edit: You probably have .625 mm screens. Maybe try not doming it as it would be bigger without it being domed. I personally think I'm going to buy some bigger screens.
Edit #2: Actually, you have to dome it, it seems. I couldn't get a flat screen in the same way. These screens aren't ideal, though. It's way too easy to flip it.
I think I need to get a screen more like Tweak's.
Why dont you guys having trouble with screens fitting just by 20mm screens and cut it down to fit? All the wands are slightly different diameters anyway ,my friends fits snugly , rather too much on the tight side and a couple of mine rattle so i just bought some 20 mm screens and cut with scissors to fit each one .
That might solve my problem of sucking flowers through, but there's still a problem of flowers not getting vaped on the beveled ring. You could just say stir more, but stirring was starting to get really irritating.
Having a screen at the end of the wand allows all the flowers to be vaped without anything blocking air flow (i.e. beveled ring). Instead of resting on something, it's "floating", giving optimal air flow. This allows flowers that are pressed up against the wall of your wand to get vaped as well. You don't have to stir nearly as much this way.
Now I just need to figure out what kind of screen Tweak has and where he got it.