Extreme clutch shudder

Here's how it happens;
You put the disc up and slide the line-up tool in to hold it. Looks good right?
Then you heave the PP up there and try to start one bolt. You fumble around long enough that , laying directly under it, you get concerned that it it's gonna fall on your face, so you let it down onto the line-up tool. After the blood gets back into your arms, you get the idea to start a bolt while it's hanging there, which sorta works. Then you rotate the PP up and start another and so on. Now yer getting excited so you start tightening them up. Then you remember that yur supposed to draw the PP down somewhat evenly, so you square it up. You notice that there's a bit of a gap there, but it doesn't raise any flags cuz it's your first time. So you run the bolts in, by degree and shazzam it's done.
You pull the line-up pin, and toss the pregnant sow of an A833 up there , install the linkage and Huh, that's odd, the adjuster looks a lil off, but still no flag. After everything is done.......you start the engine up and realize; "ohchit, something is wrong".
Now the flags go up.
Now you remember that gap looked a lil big, and the adjuster was off, lol.
Brewski-time; tomorrow is a new day.
No this never happened to me, just saying, for a friend.