I like to see from 4 to 7 degrees difference between the pinion shaft and the driveshaft being uphill compared to the pinion shaft. The intersecting angle looks like a V,
If the pinion shaft angle is exactly level then the driveshaft needs to be uphill from 4 to 7 degrees positive If the pinion shaft is negative 3 degrees downhill then the driveshaft needs to be 1 to 4 degrees up hill to get the differences you want to have