Aida,
I too am descended from some Acevedos that used the parish church in Tepetongo that served the communities of Salitrillo, Tinaja, Estancia, Buenavista, Salitral, Vivoras, Sauces, and a few others. I had the film # 0445156 that I transcribed for the time period you stated, and there is a gap in the records from 1780 to 1787. I looked at the index of the batch number for that film, and I didn't find any De La Vega or Vega, Bega or any Toribio or Bernardo Acevedo, Asevedo, Asebedo. Perhaps the records for your ancestors are lost, as they are for many of my ancestors.
My Acevedos were Luis de Acevedo/Maria de Castaneda, parents of Francisco Acevedo born 1723, father to Domingo Acevedo, who was the father of Ma. Juana Rosalia Acevedo born in 1750 in Salitrillo. She was my gggg-grandmother.
Emilie Garcia
Port Orchard, WA