The new Flex FE 7, or whatever it's called. POS didn't even make it through a mid 2000s Honda hood that was pulled from a junkyard. Guy replaced his damaged hood with this one, severely oxidized. Did fine on the 1st half of the hood. Started the 2nd 1/2 & upon starting the machine, black specks flew out of the housing. So I stop, wipe up the mess, & try again. Speed 5, Menzerna SG400 & LC Thin Pro pads. Happened again. Machine was warm, so I let it cool some. Don't really have time for that, but shame on me, I left my 3401 at home. I was just doing a hood, for crying out loud. Once it cooled some, I completed 2 more section passes without incident. Once I got up by the cowl, the machine started walking, hard. Totally flat, I had to physically hold it from walking. Shut it off, changed pads & went back at it. Same results. F this pos, I went home & grabbed the 3401 to finish what light weight couldn't handle.