I bought a 2003 zzr 250 off craigslist...
got my chain replaced at holeshot, and when the mechanic took it for a test drive, he said i needed new front rotor and pads because of the brakes shuddering... (i noticed this earlier and figured i just needed new pads)
so i bought new pads $40, and new rotor $330 and replaced them myself. bike brakes exactly like it did before. wtf?
also, if i'm doing 80 or so and i let go of the handle bars, they start shaking left and right, at first barely noticeable, and then progressively worse until i have to grab them again because i feel like i'll dump the bike. (don't feel it at all when i hold the handlebars)
it's clearly not the brakes that are at fault... what could it be? wrong alignment? bent forks? bent wheel? little help please