FE/FC FC swingarm contacting brake master cylinder

Anyone find a solution for the swingarm contacting the rear brake master at full compression? It only seems to happen at the MX track on bigger jumps. The TransworldMX magazine '15 FC450 test bike came through our shop a month ago and it looked like a chainsaw hit it... After speaking to some people at Husky it seems its just swingarm flex and a tight clearance.

A local suspension tuner mentioned installing a 1.25mm thick washer on the left side of swingarm/motor gap and its supposed to not bring in the frame as much at correct swingarm nut torque. I've installed a shim but it still looks like its making contact. I haven't heard of the KTM guys having the same issues....yet. Just wanted to throw it out there..

check your master cylinder mount very carefully, I had somehow pushed mine in a fall or something and it was doing the same thing. I could see just a little paint crack evidence and when I looked at it from the rear could see it was slightly off from the line up with the chassis. I used a long prybar and tweaked it back into alignment, had been fine since.

That would be my guess also.... mine never hit

I'll try to pry it out. Surprisingly its doing this at only 5 hrs of use, and somehow, I haven't even crashed it yet....or had it on its side for that matter. The main concern was I'm installing the cool black swingarm covers to keep my pretty swingarm.. well, pretty. But they contact the master cylinder to the point it jams it in place.. Sounds like a pry bar and dremel tool are going to get used tonight.. See ya in baja Rob!

I need to back up on this.......my mind....I think that chafe was on my ex-Italian Husky TXC310R.......for sure it happened I just need to sort which bike. I started thinking about it and I second guessed myself. But check it on the New husky anyway it did happen and some bending cured it.