I DID draw it out. If the red line has X tension, then each part of the red is at X, and the two top "red" blocks are each being pulled down at 2X. To counter act this load on each red block, the blue line must be at 2X tension, and it must be at 2X in each part. Since the top clew "blue" pulleys have a blue line around each one, each one sees 4X load, times 2 pulleys = 8X load on clew. What am I doing looking at that the rest of you aren't? All 4 bottom pulleys are fixed, right? I can email anyone my sketch, but don't know how to post it.
Chris