So, I had a very minor vibration while on the throttle at highway speeds that I noticed sometime after installing my IPD adjustable torque arms and pandhard bar on my '90 245.

The other day I went to check my pinion angle and got what I thought was a good parallel driveline with equal and opposite angles, only to end up with a much much worse vibration at 25mph. I followed the IPD instructions but I feel uncertain about taking the angle measurement from the pinion u-join flange.

What are some details of how you guys took your measurements and from where exactly? Take the DS off the pinion and take it directly from the flange?

This is so tedious and frustrating. I want to rebuild the whole DS soon including my leaky output shaft and carrier bearing.

Thank you for any input.

Keith