I started the F-Body upgrade today. The SS lines are supposed to be here tomorrow, and that is all I have left to do. However three of the four stock brake lines did not want to come off. The front driver side line I had to disconnect from the distribution block under the hood. The two rear lines I had to disconnect at the strange cigar-sized junction on each side. :icon_conf I believe the fitting is 12mm and the cutout to hold the line is 16mm, but all I am going to accomplish is rounding off the fitting. I have used heat and PB blaster. Any suggestions on separating these parts before I go figuring out how to replace them?