That is a different setup from the way the lines connect to the expansion valve on the three 124's I've dealt with.

The fix. Would it be possible to run the proper size die over the damaged threads? It that lip on the tubing does not interfere I'd try that.

Edited:

You probably know this now but with those flare type fittings, if you can not screw them in a good ways to start with your fingers don't even think about tightening them with a wrench, because they are not going to go on straight.