My story is told in the simple past, third limited. This works for the story, which is alternate history, not quite epic and with no magic. But certain events in the MC's past impinge on his behavior in his present, and I tell those in snapshot scenes. In the telling, I begin the recall in the past perfect ("had climbed," etc.) but as the conflict boils up, I slip into the simple past ("he saw red"). This seems a more immediate way to recount the incidents. I am not so much concerned with being grammatically correct as I am in being entertaining and preventing reader confusion.
Should I be consistent with my tenses or is it OK to shift once I get going in the recall?
Should I be consistent with my tenses or is it OK to shift once I get going in the recall?