I recently installed chrome rotor covers on my 84 GL1200 Aspencade. They were a pain in the butt and didn't fit right so I took them off. I put the front wheel back on the same way I took it off but now it doesn't feel right when riding. Sometimes I get vibration. In fact I took my hands off the handlebars for a second (because it use to run straight) and the wheel shimmyed real bad. Why is this happening and what can I do to fix this?