To all who've used the Motive bleeder, what am I missing? After connecting it & pressurizing the lines, the 2 rears bled out nicely, to a point, after which, no more fluid will bleed out of either caliper. Could both press. stabilization valves be stuck/clogged? On the front side, RT lowers bleed normally, LF lower bleeds only the outer screw. Nothing comes from inner. I pulled all the bleed screws in question & successfully blew air thru them, meanwhile, while doing so, virtually no fluid came from open bleed screw ports with 20psi to the M.Cyl. The pressure holds steady on the Motive, so I don't think the fluid's bypassing the MC into the power unit. The brake pedal is at top position. Is there a check valve somewhere that I missed disabling? A junction box, "octopus" that will resist 20-25psi of fluid pressure if it has an air pocket? The only opening of the brake lines was the removal of the front calipers, no work on rear brakes at all, & the original fluid was not grungy, so I can't figure why the rears no longer move any fluid. My first 2 minutes using the Motive were gleeful, anticipating a relaxing, easy, one-man operation of bleeding the brakes, but it's been a hair pulling experience ever since, though I don't fault the Motive for this stress. It seems to work fine, but I just don't know what I've overlooked, as Bentley doesn't mention any unusual steps or "what-if's." Thanks in advance.

tw