two link issues

I have a two link, on an 89 ex cab. my issue is at full lift, i get vibration from the driveshaft. if I lower the rear it goes away which tells me the pinion angle is quite extreme. Now, I have no shims to roll the axle forward.

Best course of action by my guess and I'm looking for confirmation:

Put an angle finder on the driveline, run through the suspension, full up, full down, and see the degree difference between the two and try to shim the axle to a happy medium?

Regards,
Christopher

Drive it where the angle is good. Set it up where you drive it the most. Your u-joints will thank you.

Your driveshaft is ramming into the trans tailshaft I bet. At ride height your axle pinion should be parallel to your trans output shaft. Which means if your trans pints down 2 degrees, your axle should point up 2 degrees!

thanks for the tips, keep them coming, i'll be testing all this, this week.