As we've changed how Surf fundamentally works these days (prespeeding restrictions / ahop zones) we respect the fact that certain records aren't as easily attainable now. With that in mind we've gone ahead and cleared the current set of PBs allowing users to be able to now earn new records. We do have a record of all the PBs so it's not like they're ultimately gone - but you won't be able to view these for now.