I'm replacing my emergency brake cables so I no longer have to use the brick under the back tire. On the replacement cables there are two rubber sleaves. Where do the go? I'm sure this is a silly question but I can't figure it out and there are now directions. I am replacing the originals from my '50 1/2 ton so not much was left. Also, do you have to buy the gasket for where it goes in the wheel or is it advisable to make something?