Reply To: Going t Kever Rochel – “Mama Rochel helf mir”

Rebbitzen, in SA O”CH (681,4) mentions a custom to go to the grave of tzadikim Erev Rosh Hashanah. The reason is indicated by the MB is that the place has holiness where tzadikim are burried and the tefilos are listened to easier without interference. This might answer your question about asking them to intercede to be a melitz yosher at the their grave site.