I forgot, I am using spring chocks in my Jetta because our dirt/gravel road is really bad and I scrape otherwise.
This is the part at Kragen auto parts:
Kragen Part Number 18907
It is the "Make Waves" coil spring booster. Here in CA they are $9 apiece in the store (even though the online price is $6.49 and the picture shows a pair.)
Just lift up one corner and work it into the spring, then do the other side. I haven't had any trouble at all in the 2-3 years I have been using them.