No problem with the intelligence lol...and actually I got my suspicions. The old one and the last new master cylinder looked the same and had F and R clearly indicated on the ports. This is my second new cyl and its different, its larger with no indications of F or R. The part number on the box is correct for what I need, but I wonder if the master cyl that arrived in the box was correct in relationship to the part number. This has been bugging me, I need to check it for correctness again before concluding its not part of the problem. I can say the larger of the two reservoirs (the rear one) is feeding the front brakes. This is usually normal to what I remember? But I'm now suspicious of the master cyl itself, I may have been given the wrong one overall. I'm going to get this doubt cleared up before fighting it any further. Appreciate the help. Thanks.