Take yours out and take it to Redhead. They will rebuild it better than new and even respect your color and tag. The only way to grease it is to take the top off and finger it in. You should try to remove the "clay like" grease first, but it will still not get into the bearings where it is needed most.
Get it out and take it to Redhead! You will not be sorry! The removal of your header will be forgotten soon after your steering is way better!
Rob
Thanks Rob. appreciate the info on greasing. I agree. better to rebuild.