Excuse me (no attitude)
, I think what I'm using is like 1foot square lanolium stuff that butts flush up against each other. I'm sure the springs and tires will be great though.
And jumps? mm? I have a carpeted area in my kitchen (short tight weave) and I made a jump that was 2.5" tall. My car would jump 1 - 2 feet long off of it. It is sooo sweet when you hit it just right, and it hits that landing ramp smooth as buttah! Makes me wanna take my Ford Tempo out into the boonies and tear it up.
Why do you say only a few mm? I've seen your vid's. You car is pretty much as fast as mine. It would jump well. Your's is a spec 1, right? I love the track design.