Here are more realistic models for Serbs/Slovenians with modern proxies (and yes, I won't artifically reduce the fit by overfitting)
Target: Serb
Distance: 2.6352% / 2.63517890
51.4 Belarusian_Minsk
48.6 Italian_Abruzzo
Target: Slovenian
Distance: 2.6332% / 2.63320865
56.8 Belarusian_Minsk
43.2 Italian_Veneto
Target: Montenegrin
Distance: 1.9240% / 1.92395683
42.3 Belarusian_Minsk
32.5 Italian_Marche
25.2 Italian_Molise

