Hello all, great info on this site I love it, I have done a lot of reading and this is my first post. I'll be spending a lot of time on here reading since this is my first pool. It's a 28' resin Matrix. My ground is done, it's level within 1/2''. I'll touch it up and shave a little off on those spots after I get the pavers in. I have followed the instructions but just can't seem to get it perfectly round to measure 28'. I get so close, steak it down and then within the last couple measurements it is off by an inch or two. I will attach the instructions if it allows me to. For the 28' I am supposed to put the bottom ring together and then measure from the middle of a post to the area directly across which on the 28' is in the middle of the two posts opposite it. It doesn't say, or at least I don't see it, where exactly to measure to so I have been going to the groove where the wall will be. I just can't seem to get it in a perfect circle all the way around! I have restarted 3 times now with the same result. I am very familiar with forums, so I searched up the best pool forums and that's how I found this site, and it does look like a fountain of knowledge. If anyone could give me some tips or advice on how to get it as perfectly round as it needs to be. I would attach a pic but that really isn't gonna show anything because it looks like it's round but the tape says different. Thank you so much in advance and I look forward to learning all the ropes of above ground pools with salt systems so I can help people like I am asking for help now.