Look closely, and you will see the rubber dampener at the top!
And, I didn't find a nice return spring until everything was pretty well put together, else I WOULD'VE used that...however, it would've required a taller post, or shorter main-load spring...
As for washboard, don't really get a lot of that here, just a couple of real doozies of potholes...so, I figure between the springer front, and sprung seat, I SHOULD be alright..?!?
Seems to work fine for a China girl, the added power and speed of the 4-strokes may change my mind, I figure I'm already 60*/. Safer not riding drunk anymore! (Used to b pretty bad about that