I'm looking to buy a K11 for a good price considering the condition of all but the front crossmember, which is pretty heavily corroded. Normally this kind of corrosion would be a big red flag, but it was MOTed in January and had no advisories, and the bloke told me that the beam isn't structural. Should I steer clear or should I risk it failing MOT, or should I even consider what I've seen a bunch of people doing and replace the whole beam myself?