striker - It usually lets the back end roll more and generates more rear traction...
TL_XXX-S_racer - I would use Paragon Ground Effects on foam and rubber tires on carpet. The Ground Effects is also good on foam tires on asphalt. I would use the FX-II on rubber tires and somtimes on foam tires outdoors... I've tried the new Paragon (oderless) but I don't really like it at all....
endler - I never raced a NTC3 so I have no clue on a set-up... Scott must be mistaken.....