I'm happy with my modded units; I think you can adjust the size of holes a bit, just not too much. I'll try Lozo's screen at some point though just because I have a couple. The draw resistance of the original was just too much for me. I did a lot of side by side comparisons of my first modded unit and my original unit, and it became clear the original was substantially harder to draw and produced no better clouds or vapor at any setting. I modded the second unit because I wouldn't use it anymore... Not when the other one didn't require me to suck my brains out or go in a dark room to see what holes were clogged.... All and all, I really like the FF2, but I'd buy a FF3 if it was much easier to draw, it stayed easy to clean, the battery lasted longer, I didn't have to stir, and it held more herb in the bowl.