Also try slowing down to very slow speeds. try playing quarter notes at forty. It's harder than it looks if you record yourself. Make your you pick each note equally. Record yourself alot. You'll hear small mistakes here and there. Also you got to 160?! what kind of notes were you playing? Half notes? If you're playing 16ths or 8ths, that doesn't seem to good if your looking to get perfect timing, but then again, I've never heard you play. Also if you can manage to sweep the Arpeggios the Yngwie uses that's ummm, watch out.