HELP......I have a 1989 Suzuki DT 100 and the last few times I've taken it out I've noticed that the steering is getting more difficult. I have to work rather hard to steer. Any suggestions on something I can do to help this that will not cost me an arm or a leg? I'm not too mechanically inclined so photos with instructions on how to do this would be greatly appreciated.....thanks! Yolanda