I am wondering if anyone has found a replacement set of shocks for the rear of the Prosport? The Originals were made by Works and they are out of business. Mine are leaking all over the place. I really like the look and the reviews of the Progressive 412's, but I cannot find which model I need. I called tech support line at Progressive and they told me they cannot help me unless they know the spring rate of the old shocks. They asked me to disassemble the old ones which I did, but there are no markings. The tech then suggested I call Big Dog and ask them, I did but haven't heard back from them. The shock is 13" eye to eye. Anyone have any suggestions?