I'm trying to overhaul the headset on an earlier 90's Basso I purchased last month. I was skeptical as to whether I could pull it off, and I was right, I can't! I loosened the stem bolt, tapped it with a hammer and then proceeded to unscrew the top lock nut. I prepared for the fork to fall, but it never did. I've unscrewed everything, but the fork and headset are fused together. Any ideas on how to get these apart or should I just give up, clean what I can and then screw everything back together?