Ed
Thanks for your reply-
The transmission output shaft is about 2 degrees downward from level and the driveshaft is about 4 degrees down. The rear axle input (pinion?) is 10 or 12 degrees (the front is higher than the back). I'm thinking that the pinion angle should be about the same as the tranny shaft, right? If my calculations are correct it is about 8-10 degrees off.

If you think you can or if you think you can't, either way you're right.