I'm putting a 36 mikuni pumper on an XR 400. I am so old school, I have never even seen dual-cable carbs! Just used to unscrew the top and pull out the slide and needle. So, #1, it's really tight in the carb area. #2, seems like I gotta undo the cables to get the carb out, and #3, I can't see quite how to get enough slack to undo the cable ends from their retaining holes. Then, supposing I get the old, stock carb off, is there a proper sequence for running and adjusting the two new cables? Any tips or leads to a thread would be greatly appreciated. The carb came without any instructions.