I wasn't thinking that the washers could warp or bend, but rather that the washer could dig into the frame (being that the washer is such a small surface area, so could cut into the frame and misshape the dropouts. For example, running 13S/40amps, with Kiwis first run torque arms (that he made for the V3, so they were not long enough for my V4), the points are digging into the frame. Never underestimate the force of torque from these axles is my view, and the point I am making is with those washers the surface area is so small, I personally think they would dig into the frame. The point I am trying to make is, the washers don't do much more than what happens when a 10mm axle slides tightly into a standard dropout, you still add torque "arms" because the axle will simply slice into the frame dopout, how would this be any different? The whole point about torque arms is that they increase leverage and surface area to stop rotation, the washers simply make the axle a tight fit in the dropout, they add very little leverage or surface area. My view is those washers would be good for 200W or 800W (or whatever the US legal limit is), but over 1000W and I would want to see a "real" torque arm. Just my view as someone who has underestimated torque arm matters and consequently blown dropouts and controllers over 5 times in other bikes.