Ok, I just tried this, and with my CSR, I have no side- to -side FF at all. I have rumble and weight, but no FF otherwise. Going back to my other file to see if that's the problem.
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EDIT**
What I ended up doing was just adding/replacing just the gear change and tarmac vibration sections, and that worked fine.
I changed it to 0.05 instead of 0.1 though as it was a little strong..
FFBSurface scale="0.05" name="TARMAC" grip="1.0" thresholdLow="5.0" thresholdHigh="10.0" freqLow="26.0" freqHigh="52.0" scaleLow="0.0" scaleHigh="1.0" length="0.1" sample="tarmac"/>
Going to try that out now. Having that vibration for tarmac does add some life into the FF. It was just a little too strong for the rest of my settings. (Using Fanatec CSR)