I am not the best carpenter by far. I decided to build my own stand for my 220 reef build and well it didn't turn out the best. I don't own any equipment to cut the wood so I basically bought the 2x4s at Lowe's and had them cut to all my specifications. I brought the wood home and started assembling the stand. I didn't realize it until it was being put together that some of the wood wasn't cut right. Some were too short. There are some small gaps on some areas. Should I shim the small gaps? Or would it be safe to put the tank on? The 1st picture is one of the middle post and the second is on the corner closer to the camera. Thanks for the help!