I became sick of replacing steering stem bearings on both of my YZ's so often. I decided to install a grease fitting in the steering stem and filled the frame tube holes with expanding foam. Now, I just squirt some grease into the fitting every now and then. It seems to work great! This might add just a little bit of weight because of the extra grease but it is worth it to me. I ride my bikes in some horrible conditions all year, even in the snow. I also pressure wash them because no other method will take off some of the clay-mud that we have.