Since I bought my /6 in 08, the only thing I have done is change fork oil once.
I have never been real happy with the ride and am going to disassemble and do a rebuild on them.
Supposedly the bike has progressive springs according to the previous owner. I am considering the heavier fork springs as recommended by Max.
I am looking for just a little softer ride than I have now, but without creating a whole lot of fork dive.