Plan was to also do Pike Hill climb but reached the bottom at 7.45 and knew it was either that or Barns Farm, not both. Had a mechanical near the top of the open muddy bit of Barns Farm; was making the change to the final cog which went badly, dead stop, panic unclipping and jammed the brakes on to stop rolling back. Got started again but could tell something was rubbing and it felt even harder. The front brake wasn’t fully released so it was like riding on the big ring when you wanted to be on the middle. Did a couple of hard stops coming down Sullington to see if that helped but it made it worse. Fiddled a bit with the bolts and loosened it enough to ride but need to spend lunchtime googling mtb brake problems. Think it is a location pin, might need a whole new front brake.