this was talked about a couple of years ago. i heard a rubbing noise
on hard bumps. same thing.. i took my cutoff wheel and cut an
inch or so off the post[at the bottom, of course]. others have
had the same issue. hope this helps. im using the vic backrest
on my ultimate seat.
2011 cross roads, crimson red, speedo reflash,
forged bars,bag bars,tach,driver and pass backrest[vic]
vic luggage rack and lowers,iso grips,2" pullbacks
hard bags,xc adj pass footrests, color keyed side
chin fairings. 7 jurock custom made windshield.
ultimate seat, hid low beams, timing wheel back in,
and of course, a ric z laydown license bracket.[5