IMHO, I would start with the basic's,fork oil. The correct amount and the correct wieght for the rider, you may be able to achieve what you are looking for there. The C-5 comes with 10 w 30, thin motor oil. Thats old technology. Try a 15 or a 20 wieght specific fork oil, and you will feel the difference right away. That being said, there ain't nothing wrong with experimenting with that front end either.I'm looking foward to scotty's front end work. I'm sure he's gonna find something that will make it better.
Also motor oils get bubbley , It gets foamy. A good quality fork oil will not do that.Can you imagine all that foamy oil being forced through the little holes inside you fork?