After 3.5k miles of road riding mine sagged so much I had to take care leaving the bike on the side stand as it would just want to fall over.

I complained to the dealer about it and they agreed that it wasn't right. The forks felt like they had no damping. Turning up the preload on the rear just overwhelmed them even more. Eventually they agreed to replace the rear shock under warranty and replaced the oil in the forks with 20wt. That allowed the preload to be upped front and rear and has really helped the front feel.

The rear does feel like it is beginning to sag slightly again but at least I can up the preload without the front end complaining.

Al.