[Pebs4 (David)]

I have an issue with my HEQ5 pro it finds targets very well, but slowly goes off course. what can cause that?
1. I roughly polar align point to south in Australia. manually move tripod to point true south.
2. The scope is parked so i just start it off with the configuration, time date ETC.
3.I always do a 3 star alignment.
4 It find planets very accurately, BUT is slowly goes off course. What could that be? takes around 5 minutes and it goes out of camera view.

kind regards

David