yea the bottom rack is a pain in the butt already. Its suppppper snug so ima have to shave a bunch off of the tub.... As far as building the rack i bought 8 foot long sheets up melamine and cut it. i can say one thing that cutting 8 ft long sheets up this alone IS NOT easy. It woulda been a TON easier with some help but i managed and didn't have too many problems. i built it upside down so the bottom shelf was actually the top. It made things a lot easier. i put cds in between the tubs for the perfect gap size even though the bottom one didn't work out as i had planned lol. anyways hope this helps