Kioti CK3510SE HST, Ford 3400, Gizmow ZTR, Simplicity 7016H
I wouldn't worry about it atm.. Theres no real snow load where you're at and it takes away head room. If you want to beef it up a bit, you can add blocking between the rafters at the mid point. That would help sturdy it up and spread the load. Cross bridging helps with twisting but blocking does twisting and load spreading. Double blocking 1/3 the way in from the sides help even more.
Here's a pic
/ Tractor Lean-To Project (and checking to see if you can link a Facebook Photo Album)
A really simple way to add strength would be to nail a 2x4 flat along the bottom of some/all of the rafters. Each would then be in the shape of an inverted "T." You would lose only 1.5 inches headroom, and no cutting or fitting.
Bruce
/ Tractor Lean-To Project (and checking to see if you can link a Facebook Photo Album)
Those rafters have me concerned. 2x4s would be lucky to carry their own weight with an 11' span. I would definitely try to add some strength before they get a permanent bow.
The wall should have had a third post and just run band boards between them. I am afraid your ground is going to heave up on the first freeze and push up the center of your wall.
Please don't take these comments the wrong way. Just hoping to save some headaches in the future.
I like seeing projects done with family. I couldn't have gotten my wife out to help for anything. Probably best for our relationship.