Dear Friend Rik,
propagation is sometime effected by solar activity, sunday it was solar flux 250 quite high with almost no geomagnetic activity.
4717 is known also as Radio Yura Yura but is from Bolivia, not Peru
Concerning 4825 Radio Andahuaylas....did you mind La voz de La Selva Iquitos on 4825 cause Radio Andahuaylas it was on 4840 times ago but now is inactive.
Please confirm this suggestion, ERRARE HUMANUM EST, EST CORRIGENDUM MELIUS as they said 2000 years ago in ROME.
Good dxs DARIO PLAY-DX-ITALY