Recently on fast decents I have been experiencing front end shake on my 2004 Cannondale R2000 when going over 35 mph. The rim appears nearly perfect on my Part Truing stand. The bike is all original and to look at the bike it looks brand new as I keep up with keeping it cleaned, etc.
Any thoughts as to what may be contributing to the shake. I do way about 10lbs lighter over the past month or two as I have been eating better, etc.
Can the rim set up just be in need of a "professional" tune-up, maybe to tighten up the spokes/baldes? The do feel fine as far as I can tell.
What do you think?