i recently rebuild 600 pedals and found it hard to get them adjusted properly as you had to keep switching sockets... I tightened down the lock nut then backed the cone off and they were pretty easy to adjust. but then I rebuilt some nouvo record pedals (with the original bearings) and the craftsmanship was delightful, I could use my 13mm cone wrench on the cone while tightening the the locknut with another wrench. and of course the bearings are a lot smoother in the nouvo records. gotta love campy.