[snowman]

The crimp "fix" is probably good, IF properly done. Thats a problem, the big IF factor. Even then the connection may not be up to snuff, ie up to lab conditions that evaluated the "fix". Only a TOP NOTCH electrician with the proper equipment and enough smarts to know when the thing isn't working like it should, should make such a repair. Only problem with this is finding a top notch electrician that will sign up on the dotted line for the "fix". Someone who would put his reputation, entire assets on the line to fix an old house like this? I don't know of anyone who would, but maybe you can find someone. Thats the practical aspect of your problem. Carfully investigate the background of anyone who is willing to sign up for this job.

Just remember that the same people that approved the fix are the same people that originally approved Al wire in the first place. If Al wire were all that great and the pigtale worked all that good, thats the way we would be wiring homes today.

You should probably do the fix yourself if you do not want to rewire with copper. Go to AMP and buy the tool, most likely a $200 to $400 item, with instructions on its use. The wire is insignificant in cost. The rest, just labor. Remember to turn off the power when working on it. And remember that if you ever sell the house and the wiring causes a fire, its your assets on the line. Even if you have someone else fix it and they screw it up, your assets may still be on the line. I wouldn't touch it with a 10 foot pole. Its not that the fix may be a problem, its just our fked up legal system.

Al wire can and WILL cause a fire eventually. For low amp home circuits there is no alternative to copper at this time.