The rear end of my AN650 is sagging a bit. I now need to have the suspension on the 5th setting even if I'm riding alone. Rather than fit the factory shocks, does anyone have any experience fitting alternative/after market shocks on the back? Perhaps my biggest issue riding my Burgman (which has now done over 120,000km) is that the suspension is a bit harsh. I'd like a bit longer travel if possible. Suggestions?