Nasty hot end collision and now I'm getting this on my bed meshes.

Afternoon, I had a nasty print collision which broke my rapido 2. I have replaced that and done a once over on the printer. Now when I do my mesh bed leveling I get what you see in the picture. I checked with paper and it is actually 1.2mm higher at the back of the bed than the front. I assume the collision was so hard it tweaked my frame? Not sure how to adjust this. Any info or tips very welcome.