First of all; I hope you can fix your guitar strings very soon bro! Not because I didn't like your cuatro performance (which i did) sino porque, hermano, Yo se la roncha que es estar uno sin su guitarra🎸... de pana, y más usted que es tremendo artista.
And second; I'm in Chile and here too there are cuatros... they're in music stores, in music schools. .. and they're the same as Venezuelans, same tuning and everything. Also in Colombia and i think Peru but don't know for sure. .. so i think that instrument is all over Latin America... how interesting huh?🙄