I think I have 3 washers in the head.
The L brackets height depends your specific truck and trailer. You want them set to where the bars sit level on them at ride height. For me, that was between two holes on the brackets so I tried both and settled on the lower setting. Easier to put the bars on.
Oh check those square Bolts on them periodically, I found them loose one morning while hitching up. I guess that's why the pry bar has a wrench that fits them on it.
Sent from my iPhone using Tapatalk