Front suspension?

[TINK_imp]

I agree with CBXBob, Honda's do tend to be under sprung and over dampened.

I've done some research and discovered the 2004/05 Honda 599 (CB600F, Hornet) has the same conventional 41mm Showa front fork setup as the CB1100/A (not the /SA, Deluxe, which has two different length springs for some reason... still researching... ).

Racetech lists front fork springs for the 599 http://racetech.com/ProductSearch/2/Hond...et/2004-05

I run 5w fork oil in all my Honda street bikes, this combined with fork springs for my weight (205 lbs) works great, for me.

TINK

Customariliy Japanese bikes are over damped and under sprung. I usually end up with stiffer springs and lighter oil. Progressive Suspension, Race Tech, and Works Performance have lots of info on their web sites in including spring recommendations.

If the forks have been opened, the wrong fluid height would cause this also.

As Ack mentioned, it sounds like there might be too much fork oil installed. This would allow the initial sag to occur when sitting on the bike, but once you've reached maximum compression for the amount of oil in the tubes, I don't believe that it's going to give any more. The end result would be a very small amount of travel left to absorb bumps and such.

Reading the service manual, it would appear that simply removing the forks and checking/correcting the fluid level is a (relatively) simple procedure. And if I'm understanding correctly what the others have said, taking the forks out of the triple clamps entirely ought to resolve any potential binding issues...so I'm thinking that's what I'll try.

Perhaps that is the way Kawi did it on their KZ in the old days, but the Showa forks that Honda uses require you take the spring out, compress the fork, add oil then measure height. Fork needs to be vertical when checking oil height, hence the need to remove the forks from the bike.