In the talk about trying to correct the beams on these I now have something to say on the matter.
I built my first high powered 635 about a week ago. It's set at 750mA and I was using a red coated aixiz acrylic lens that came from Qumefox IIRC. I was very upset at how horrible the beams were on these. On a high powered 445 it is bad but nowhere near as bad as these are. I was horrified at it. But I got one of the lenses that Lazeerer showed a few posts up in this thread.
And wow! It really makes all the difference in the world. one single lens, easily replacing an aixiz glass lens, and easy to modify. But it makes the dot bearable and the beam not the size of a house if your pointing outside.
I don't even have red blocking goggles so I can't take any measurements but like I said, outside pointing at far objects.... SO much difference.
I hope Lazeerer will start selling these as the power drop is very little with a much much better beam.