more idler arm problems...

I am missing my idler arm bolt and a washer (?)

The bolt that I was going to use fit the hole perfectly but too small for the barrel of the arm. I have tried installing a washer but the arm just flops around when installed.

The service manual doesn't show a washer.

What am I doing wrong ?

Another quick question....when installing the front brake roter, you are supposed to tighten the nut up to 240-300 pounds then back it off to hand tight. The book talks about another washer then the nut cover then a cotter pin.

My torque wrench will go nowhere near 240 ft pounds.

Any help is appreciated.

ian.