Recently got my hands on a copy of 80's birth of extreme, superb. Loving the ben and jerry parts and was wondering how the two crux sections of Hubble and Liquid Ambar line up in terms of bouldering difficulty. They both look unbeliveable and considering the speculation that both could be half a grade harder than they were given, amazing efforts. Also how old were they at there sports climbing peak ? hitting 30 this year and not looking forward to it.