I haven't read all of the replies, so this may be the xxth repeat, but:
1. Revv the bike. I'll Always remember the advice of Theo Lamers on almost any Guzzi: not HIGHER than 4000 rpm on the warming up, not LOWER than 4000 afterwards
2. Norge front suspension always felt too harsh for me. Made my teeth rattle. After a few months, I had progressives installed, which helped a bit and - later - lighter front fork oil, which helped a lot. If I knew then what I know now, I would have tried the lighter oil first, before spending money on more sophisticated springs. Btw, I also had the rear suspension changed. In my humble opinion, if you must spend money on the aftermarket, suspension is the first thing to go for.