My new Ziggarat is coming with SRAM X.0 rear derailer and X.9 shifters and XT front derailer..anyone have any experience with adjustments on the X.O rear...are they simple to adjust (no rear loop) and do they work well...I am used to XTR / XT and dont usually do my own adjusting, however, I have on occasion with some success and plan on doing it on my own more.