I've read everything Spacetiger has written, seems like he was the only one who ever actually tested springs. Also read some very early Lamontster stuff about front spring rates, but that was on the earlier stuff. Was wondering what the OEM spring rate actually is for new model RTL's? I got behind an 18 wheeler today, and it was about as bad a buffeting as I've ever experienced. The Spyder ran straight as an arrow, but as the buffeting switched from side to side it set up a slight rocking motion. I feel like a very slightly stiffer spring may help this, without going the full suspension upgrade route. anybody have this information?