Crossword Puzzle Flexible about rules

Clue: Flexible about rules

Rules for making pewter? (TINCOMMANDMENTS with 15 letters)
Not so flexible (FIRMER with 6 letters)
MTV's "___ Rules" (ROAD with 4 letters)
Flexible strip of wood (SPLINE with 6 letters)
Set of rules (e.g. CODE with 4 letters)
Rules enforcer (REF with 3 letters)
Flexible tufted wire (PIPECLEANER with 11 letters)
Stretch, as the rules (BEND with 4 letters)
"Smokey, this is not ___. This is bowling. There are rules." ("The Big Lebowski" quote) (NAM with 3 letters)
Rules regarding tile setting? (GROUTLAWS with 9 letters)