My bike has a soft front brake it's been like that since i got it and i finally looked into fixing it. I bled the lines no bubbles and it's still soft. Then i took all the fluid out and filled the lines, bled them all the bubbles were gone in both the master cyl and the caliper it's still soft. The bike is an 86 with no metal lines. Could it be the line or the master cly that's ca using the squish.