I need a small master cylinder with 7/8" bore

Gentlemen, I'm sorry for the angry comment. My mistake was mentioning a problem I was not seeking advice on. The original post was to find a MC that met my requirements. The performance issue was there with the Wilwood MC the new one replaced. The reason I went to a different MC was not to try and correct the problem, it was a space/packaging issue because of the new, bigger (much bigger) headers. This MC performs exactly the same as the Wilwood one it replaced as I expected it would because they both have a 7/8" bore. I realize you are trying to help and I appreciate that. This problem is going to require a methodical diagnosis with pressure gauges on both the front and rear lines to see what's going on. I strongly suspect that Wilwood sent me the wrong pads. The reason I think that is because the hotter they get, the better they work. After I burnished them the first time and they were ripping hot they worked pretty decent but once they cool off they do not perform well. Also when I make runs at the track I like to make the first turnoff so I stand on them hard at 121 mph at the end and I can feel them grab harder and harder as I'm doing it. Then on the return road I tried them and they work fairly good. Once they cool off again they are weak. I have worked in the automotive performance racing industry for ten years at two different manufactures and I can tell you that more than half the people at the companies I worked at were not car people and knew very little about the products they were making or selling screw ups in all the departments happened. Packaging was one of them. Again, thank you for your input and I do apologise for being a jerk. The car is going into storage now because my wife and I are about to sell our house and relocate from Connecticut to North Carolina so I will not do anything with the car until we purchase another house. When I resolve the problem I will share what I found and did. Thanks again and have a good evening!