Does this look right?

I am about half way through my build and putting these 1x2 spars across looks awfully flimsy and has me concerned!
I used 1x2 mostly and at the front top corner and where the hatch attaches I am using 2x2.
After everything I've done so far this feels the most unsure I've felt about building. I started to just use 2x2's all the way around. Anyways any comments tips or suggestions?
Oh the Ty Dean plans that I am call for little 1" blocks on the sides of the spars but it seems so useless.
Well I was going to post a picture but the tapatalk app isn't letting me.
I used 1x2 mostly and at the front top corner and where the hatch attaches I am using 2x2.
After everything I've done so far this feels the most unsure I've felt about building. I started to just use 2x2's all the way around. Anyways any comments tips or suggestions?
Oh the Ty Dean plans that I am call for little 1" blocks on the sides of the spars but it seems so useless.
Well I was going to post a picture but the tapatalk app isn't letting me.