Pinion and driveshaft clearance questions

[County]

Finally put the bed back on after refreshing suspension, brakes, etc. 5" drop springs on back and CPP crossmember with the trailing arm mount points at the top instead of the bottom. Other relevant thing might be I put in new poly trans mount bushing.

'72 C10, th350 trans. 3 things on my punch list after getting full bed weight on and full weight on suspension were Panhard adjust, pinion check, and DS clearance check.

Panhard was good, moved diff over 1/4" or so, seems pretty good to go.

Pinion is giving me fits. I've read the threads, watched the vids, etc. I can't seem to get decent readings without pulling driveshaft again, but averaged a few measures that were close.

Couldn't get good tailshaft angle, so used straight edge on harmonic balancer.

This is what I came up with.



Do I need to get these numbers down to 3 degrees? The vibe chart says operating angles should be okay up to 4krpm before they become a concern, but I'm new to this.

What is the easy fix? Please be specific like I'm a child. I'm old and tired...

Secondly, I have plenty of up/down room through the crossmember, but with the truck pinion being offset, I have about 3/4" on the drivers side through the loop, but only 1/4" or so on the passenger side. Is this a concern?



Not a good pic, but taken from rear facing forward, using the side edge of ruler to show smaller gap.

Any advice for me friends?