i just took my first build with hand tightened bb up to my lbs. the guy cut open a park tool wrench package, and it fit. it's the double headed spanner with one notch on one wrench end and a few notches on the other wrench end. seems the spanner end with the single notch fits my bbs better and allows better torque than the other end. i also picked up the park pin spanner with the green handle that does an ok job on the adjustable cup.