So, I figured out why you need cone wrenches to do hub maintenance after using two adjustable wrenches and getting the bearings all cleaned up . I felt kind of stupid, but figured if I did need them I could order some, so I knew the consequences wouldn't be too bad.

Are the double-sided park tools wrenches decent for a home shop guy? They're pretty cheap on Nashbar and I think I only need the 13/15mm....probably get 2 of them.

BTW- I used a sterile plastic jug filled with WD-40 to clean the ball bearings....anyone else do that?