A person who makes and repairs guns
A gunsmith makes and repairs guns.
A person who tunes a piano is a Piano Tuner. If he/she is qualified to make repairs, the title is Piano Technician.
The person who repairs your car is called a mechanic.machinate
A gunsmith Actually, a gunsmith repairs guns. A "maker" is typically called a manufacturer. Some gunsmiths have manufacturers licenses, some do not.
a tinker
a locksmithA locksmith repairs locks.
There is not a specific word for it. Piano Manufacturer is the best fit.
mechanic
Mechanic
A person who repairs pipes would be a plumber. I have never heard of any person who specifically repairs tape.
If you find a state that does not have reconstructed titles, and register the vehicle there, you may be able to do it.