Hey, just wondering, why does it need to be in a bathtub or anything? Surely you can unmount the lever, unscrew the bleeder at the top, and unscrew the bleeder at the bottom of the brake, put the lever in a jug and just pump it through? (obv with something to catch stuff that comes out the bottom) just wondering! i havnt taken mine apart yet to know if atall this aint possible, it just seems to me takeing the calipers off seems to be a bit of wasted time and effort, besides a little extra mess that can just be cleaned off with a bit of spirit or something?