Buy a manual, and also download a PDF.
http://valkyrienorway.com/download.htmlMost of what was said, do, but over time, like maybe the next month or so, depending on how far you are driving.
But I would think seriously about doing your rear end splines now, the weekend is here. If this one has not been done, or properly, it could cost a LOT of money and down time. It should be done every 10K miles, which you seem to be at 20K right now.
Others will disagree, but it's like hydro lock, it will only cost you if you don't know what it is when it happens, and press and hold the starter switch until something breaks. From what I have read from others, it is only when they hold and press a second time is there damage.