Was There Tension Between Actors?

According to most things I have read, Andy Griffith and Francis Bavier did not get along during the time that series was filmed. According to Andy and Howard Morris  (Earnest T Bass), Bavier was extremely sensitive and resented her role as Aunt Bee.

Reportedly even when Griffith and Ron Howard went to visit her at her home in 1972, she turned them away and would not see them. In 1989, however after becoming terminally ill, Bavier contacted Griffith and apologized to him and told him that she regretted that they did not get along better.