A lot of elbow grease, vice grips, and a towel worked for me. Here's proof...
http://hkxterra.nissanpower.com/cgi-bin/i/images/knobs.jpg

Good Luck and let us know how you fare...

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Hank
2000 Yellow SE 4x4 5 Spd.
"Asian Persuasion"

[This message has been edited by Hank (edited 02-16-2001).]