Bummer , got to put it on hold for at least a week until I can buy an extra square and some clamps, I was attaching the mid panel angle bar but needed a 3rd square and clamps to hold it all in place while I mark it up for drilling, could have carried on but it may have turned out a little wonky, so I'll just put it aside for a week, oh well .
Let me know how you all think it is coming along for the time being.