As the title says, I left the intermediate panel off the Pressure Plate. The plate that sits inside the pressure plate and goes on just before the bolts. Number 11 in the image below (in the top left).
I have already installed the bolts, and torqued them, and have the flywheel and clutch back on and was ready to mate back to the transmission tonight when I found it. I'm not sure what the purpose of this plate is, other than to spread the force of the bolts evenly across the pressure plate's surface. It doesn't act as a spacer, so its absence will not affect the engagement of the clutch.
Should I tear everything back down to install it, or am I worrying about nothing?
I don't know what it does but maybe it is hardened to prevent the bolts from eating the pressure plate? Typical German over engineering maybe?
I'd be tempted to run without it, but I'd hate to pull the tranny again if there was issues.
Run without, think of it as a washer. Those bolts are flat enough to spread the torque.
Tear it back down and put the washer in,..
but I'd use the same bolts,
new locktite.