[buster73]

[QUOTE=Henry Schmidt;12436660]I'm confused.
You guys are holding the head end of the stud with a wrench...right?
If you're holding the head with a wrench, the stud won't spin and obviously neither will the washer.
The nut end is different. lube the o-ring (with your favorite o-ring lubricant), apply anti-seize to the nut/threads and engaging face, install the washer dry and the washer should nut turn.
QUOTE]

You are right and it is probably overkill. But was reading so many stories about cutting and mangling O-rings during installation, that I wanted to make super sure O-rings are set in place correctly and to add somewhat more control into the process, with 24 chances to mess things up. If you do this job for the first time, it seems hard to keep everything under control especially as you can only keep an eye on one side of the block. By clamping one side in place you can fully focus on the nut end and make sure the washer won´t turn. With more experience and enough helping hands you can certainly speed things up.