I just arrived for a rehearsal where the rental bass has an Eb neck and I have always played a D neck. To make matters worse a couple of the pieces are in Db Major and E Major, both of which I often use fingerings around the neck. Any advice on how to handle this? I know if I was a better player, it shouldn't matter because I should be able to just hear the difference. However, I depend on the neck as a guide for accurate intonation.