If one looks at the immunity repressor of Cluster F1s like Mycobacteriophage Strokeseat, the coding potential data is confusing. The Starterator data clearly shows only 1 start that is found in all pham members.
The start in Strokeseat is at position 34251 (stop is at 33682).(gene length is 570bp).

This then provides adequate (just barely) space for promoters for this gene (CRO) and the next one (because they are transcribed in opposite directions). The start of this gene is at 34358 (stop is at 34651).
Hope you find this helpful!

Unfortunately, as is the nature of Cluster F1s, not all F1s have these phams.