I've never serviced a shock. I plan to do mine this week. What tools do I need, except the nitrogen setup? What do I look for? What parts will I undoubtedly need to replace? What fluids/weight and how much do I put back in? I looked at the bebuild instruction at the mx-tech website. Is this a good article to use? I was considering purchasing the factory connection high speed compresion spring. Is this a wise investment? Any tips and tricks would be greatly appreciated, thanks in advance.