[Liz Smith]

Ok, we had a similar 80-20 frame in 2005. I would highly suggest switching out the L- brackets in the corner for something which provides more stability.

We had the problem of the t-nuts getting loosened during matches resulting in our frame becoming warped, and even falling apart. At our first regional we were lucky enough for there to be a very nice, and very skilled welder who tacked the corners of the bot. We learned later that those L-brackets weren't really meant for holding a frame together like that.

I would suggest looking at the 80-20 catalog. They have some nice triangular plates and things which can stiffen up the frame and make it stronger