Yes the only adjustment for the rear bolt is on teh chain case side.
Yes the washer only goes on the clutch side, I have yet to figure out why its there.
When installing the engine set all mounts in loose, then tighten the rear adjuster nut to around 10ft-lbs, basically since I have never seen a torqe wrench that will fit in there I used the handle of my ohlins shock spanner wrench anda vise grip on the end and screwed it in failry tight. This centers the engine.
The front adjuster then just snug up by hand, I did this and my offset and C-C was dead on. (make sure you check this with the secondary tightend down.
On my 2nd engine pull I had the entire thing loose and the engine was stuck in there and wouldn't budge! It was I forgot about the adjuster nut I had tightend the first time, I loosened that and the engine then fell loose, that should give you a idea how hard to tighten. Have fun!