I'm not 100% sure but i think you can adjust the pressure. I think. Someone else will have to tell you how though.
Just so you know. We have been running Meyers for years with the Pro Wings. We ended up welding ours on. We also use either 5/8 or 1 inch cutting edges. Our pumps (E-47 or E-60) have no problem lifting or angleing.
If you think about it, the weight really is no more than if you had a but load of wet, packed snow stuck to your blade. These things are great if you are doing parking lots and drives but tend to suck a bit on roads. The wings just decrease the blades ability to roll the snow off the edges as well. They work, but just not as well.
:cash