also on this. I would not only look into the ends of the lines, but also stick a drill bit up the line. the area where the crush is located is the area of question. how big, don't know. maybe take the line off on the other side and stick a bit up there to get the size. it's important that both sides are the same, so measuring the good side and making sure you have the opening the same on the other. I personally have a drill bit set that goes .03 on drill bits from .040 to .250. I love this set.

that's why I love the inserts in my lines, I know that the opening is good throughout.