Need suggestion on repairing the break line to the Master cyl.
I have replaced the master but the break line will not come loose at the bottom T. I thought replacing the line would be not big deal but the thing will not come loose. Help......

You may have to replace the lines to. Would not hurt. You can try soaking it of course in some penetrate but I would replace the lines. If they are original they probably need it anyway

after so long the lines rust to the nuts - are you using a line wrench ? they help allot !!

Yahooooooooooooo.....
Got it!