Ducky,
de restrict the FE end cap, and if you are in an area where noise is less of a prob, find an aftermarket or FC (MX) type end cap / muffler core, that will net you a noticable change in bottom end. I got the Prorider KTM end cap $150 Aus. there was one on ebay the other day - search under KTM.
Im going to try adjusting the carby AP (accelerator pump) timing sometime soon.
otherwise just ride it - I am considering a steering dampner, but cant afford it yet.
Azza.