you 2 just said the opposite thing.

Super dave, you said that harder spring are for smoother tracks, which is what i thought.
Walawala you said harder spring for a roughr track.

Which of you is right??

Also on a completely different note does any1 know if rear shock spring for the hyper 8 will work with the Hyper 7 PBS shocks ( i think there the regular hyper 7 shocks)?

Im preatty sure the springs will work, but just wanna make sure.