i already built the whole shelf but will be building at least one more next week and will take pics of where my way strays from yours. here are some pics of how i got the 41 qt done. yes i did melt the legs and tub away but i dont have a dremel yet although i will definitely get one to use for this next time. the third pic is where the back of the tub hits the legs and i melted the corner off which allows it to fit pretty square. you can also see how i screwed and nailed it in. its the first shelf that got put together so theres a gap but every other shelf i got to sit flush.