During the ride on Sunday at the rally . iwas riding at the posted speed limits.(55) on hwy 74. I entered a right handed sweeping turn..easy aangles nothing extreme...I was in the left lane and the bike began a harmonic weave..at first i thought i could ride through it..but it bacame worse so I immediately scrubbed off my speed to counter the weave. I suspect that road surface conditions might have had something to do with it..was very unnerving... Is this indicative of the 40 year old suspension? Have others experienced this?