Fixing a Shelf Greenhouse

I gave a little seed-starting greenhouse to my wife several years ago. It has started a lot of plants for us. But the first two years when I put it together I was too aggressive with my mallet. I broke several of the plastic pieces. Last year Lynae made do with three shelves instead of the four that it was designed for. This year I made two support pieces from 2x2s. This meant cutting them to length and then drilling 5/8" holes in three sides. I haven't assembled them with the rest of the greenhouse yet. My boys painted the pieces this evening.

Yesterday evening I put it together and Lynae potted all of her plants. We are hoping for a great harvest!