Possible Clues:

• Uses a wrench
• Makes less loose, as screws
• Squeezes cycling crew between leaders in team's new set-up
• Uses an Allen wrench, maybe
• Increases restrictions on divine children, we hear
• Constricts outstanding people, reportedly
• Sounds like the way this has one taught (8)
• Sounds as if that's how one gets taught
• Discussion of great intellecuals becomes more stringent