+1
Interesting comparison with your +4 and Roadster. The current 2014 on Classics parts book shows different front main springs for Roadster with 4/4 and +4 sharing presumably weaker spring. I'm happy to be corrected but I believe the current OE rates are 125 and 140 lbf/inch, with the higher for the Roadster. Rebound springs are the same across the range.
Prior to recent SSL conversion on 8000 mile Roadster, I found zero static pre-load on rebound spring on one side and 2mm of play on the other, despite having Wolf lower steering bearings accounting for an extra 3mm on the rebound side. Compared with findings on your +4 Sid, it seems extra front weight of Roadster accounts for the 23mm + difference, assuming same rate springs, although a little surprised its so much.
