Did you solve the track problem? Your description sounds. like it is not a major problem.
Aluminum masts may be repaired. . BUT VERY CAREFULLY.
If you have not done so: Please look up Butterfly Fleet. The Internet shows 15 fleets and no status of their being active. Contact or call them for help.
Also look up local sailmaker if any.
The sailing community is small but close. I will be very surprised if you do not get help. Let us know how it goes.
If you can get in touch with a Fleet or club, they will be a source of information and help. Fleets of Butterflies seem to be North vs South. Sailmakers are generally closer to the local active racing clubs or large sailing facilities.
It is also possible there is a sail training facility in your ares. Even if a private club, they welcome new sailors. Many local municipalities have sailing venues.
Hopefully you do not get discouraged and please do not throw a lot of money at this particular boat before you discover the nature of sailing in your area. The Butterfly looks like a good boat for young folk.I would have loved to have one at that age.
We are in Austin Texas and one of the most active (Sailing, racing, training) clubs in the country resides here. Look around.
Good Luck.